Instruct Simon

To instruct Simon please contact our clerks on +44 (0)20 7842 5555 or email clerks@4pumpcourt.com.

Simon Henderson has a wide ranging commercial practice.

He has particular expertise and extensive experience in:

  • Technology & Telecommunications
  • Construction, Energy & Adjudication
  • Commercial
  • Professional Negligence
  • Mediation & Arbitration

Simon Henderson has been recommended for many years as a leading junior in Legal 500 and Chambers & Partners and has previously been short-listed by Chambers & Partners both as IT/IP Junior of the year and as Construction Junior of the year.

Comments have included:

  • One of the best senior juniors around, he’s very hands-on, very calm on his feet and very good with clients
  • he has a good tactical approach and is an impressive advocate
  • a class act, who is calm under pressure and always looking for another angle
  • very practical and down to earth, he is willing to roll his sleeves up and is very engaging
  • his advocacy is smooth and he gets on top of the information in a case very quickly
  • client-friendly manner, clear thinking and unparalleled technical industry knowledge
  • able to fiddle with the nuts and bolts of a case as if he’s tuning a radio
  • broad-shouldered approach to weighty commercial disputes
  • admired as an advocate who puts his points across fairly and quickly without any grandstanding

Simon has extensive experience of advising and representing hardware and software developers and users in a variety of claims and across a wide range of industries. His work prior to the Bar with Andersen Consulting (now Accenture) as a computer programmer and designer gives him first hand understanding of large scale IT projects and the challenges faced by both providers and customers. Simon is a member of the adjudication panel for the Society for Computers and the Law Adjudication Scheme.

As well as acting in court and assisting with all aspects of formal dispute resolution, Simon is also used to advising at all stages of the process, including: in ongoing situations as difficulties arise on live projects; at the pre-action stage; mediation and in full-blown court proceedings or arbitration.

Simon has a wide experience of all methods of ADR. He is a CEDR accredited mediator and as well as accepting appointments as a mediator, is able to assist clients at all stages of the mediation process.

Simon also accepts appointments as arbitrator and completed an LCIA arbitration as one of a panel of 3 arbitrators on a case arising out of the development of a computer game.

Featured Technology & Telecommunications cases


TNTG Ltd v Tokio Marine Kiln Insurance Services Ltd: Acted for Tokio Marine in an action arising out of the provision of IT services.


National Trust v IBM UK Ltd: Acted for IBM in a case arising out of IBM’s role in the provision of certain services relating to the National Trust’s Customer Relationship Management System.


Acted in an LCIA arbitration for a manufacturer and distributor, based in Moscow, in a case against the designer and installer of an automated warehouse system.


Acting for a major IT services provider in a dispute with a national organization arising out of alleged failures in a new computer system.


Tryzens Ltd v Equestrian Clearance Warehouse Ltd: Acted for the IT services provider in a dispute with a former client.


Southern Rock & Eldon v Open GI: Currently acting for Open GI, provider of IT solutions to the insurance industry, in an action arising out of the provision of software.


SSP Group v Swinton Group Ltd: Currently acting for SSP Group, provider of IT solutions to the insurance industry, in an action arising out of Swinton’s decision to change software platform.


Acted for several years for a major Far East client in relation to a series of multi-million pound disputes which have arisen with the client’s provider of infrastructure and related services.


Acted for a major software and outsourcing business in a dispute arising out of the provision of case and custody software to a UK police force.


AstraZeneca UK Ltd v IBM: Reported at [2011] EWHC 306 (TCC): Acted for IBM in dispute arising out of termination of a global outsourcing agreement. Issues included scope and duration of exit obligations during lengthy Exit Period.


Crown Bidco Ltd v Vertu Holdings OY & Nokia Corporation: Acted for Nokia in a case arising out of Nokia’s sale of Vertu – manufacturer of luxury mobile phones. Allegations arise relating to the separation of Vertu’s computer systems from Nokia’s.


Advising a major software house in a licensing dispute with a government department.


Advising a software house in a licensing dispute with a major UK bank.


Advising multinational telecoms company in dispute with a major mobile phone operator following termination of information and telecommunications agreement.


T-Mobile International v Logica CMG & Volantis Systems: Acted for a software supplier in connection with a major dispute concerning provision of services for use by a major mobile phone operator.


Ghostlight v Kuju: Acted for a computer games developer in dispute with game publishers which arose following termination of the development agreement.


Kuju v Codemasters: Acted for a computer games developer in dispute with game publishers which arose following termination of the development agreement.


Acted in an LCIA arbitration for a media services company arising out of the company’s provision of pay per click and display advertising services for a travel company.


Acting as one of three arbitrators in an LCIA arbitration concerning a computer game.


Acted in a Danish arbitration for a UK based software supplier in a dispute with a Sweden based mail order company.

Simon is frequently instructed in a range of construction and energy disputes in which he acts both for and against employers, main contractors, sub contractors, and professionals. He has extensive experience of adjudication, arbitration and cases in the TCC.

Simon has wide experience of all aspects of construction law and is regularly instructed by main contractors, sub-contractors, construction professionals and insurers.

He is regularly instructed in relation to all the common forms of standard building contracts including: the many versions of the JCT Standard forms; DOM/1 and DOM/2; NEC/3; and MF/1.

Featured Construction cases


Barnsley College v WYG Engineering & Galliford Try: Acted for M&E engineer in a case brought by Barnsley College relating to allegations that there was insufficient mechanical cooling installed in the new college building.


PM Project Services Ltd v Dairy Crest Ltd: Acted for Dairy Crest successfully resisting an application for summary judgment in respect of a fees claim. Reported at [2016] EWHC 1235 (TCC).


YJL Ltd v McClaren Construction Ltd; Crossfield Consulting Ltd (Third Party): Currently acting for Crossfield, geotechnical consultants, in a multi-party case arising out of the development of an industrial site.


Advised a London theatre in relation to a final account dispute with contractor following renovation works.


Acted for a major UK windfarm operator in an LCIA arbitration against their main contractor. Final account dispute and defects allegations.


Cleveland Bridge UK Ltd v Severfield-Rowen Structures Ltd reported at [2012] EWHC 3652 (TCC): Acted for Cleveland Bridge in a claim arising out of construction of the Shard in London. A dispute between the steelwork sub-contractor and the sub-sub-contractor: issues of which contract terms applied, delay and defects were tried in a 3-week trial in the TCC before Akenhead J.


Sainsbury’s Supermarkets Ltd v Interserve PLC; Interserve PLC v Twintec Ltd; Geofirma Soils Engineering Ltd; and Burks Green & Partners Ltd: Acted for Interserve in this 5-party dispute which arose out of the failure of a slab at a major distribution centre. Interserve had been appointed on the basis of a design and build contract and so was defendant in the main action and claimant in actions down the line to the sub-contractors involved.


Liberty Mercian Ltd v Dean & Dyball reported at [2009] B.L.R. 29: Effect of sectional completion agreement and how liquidated and ascertained damages were to be applied on subsequent sections.


Royal Bank of Scotland v Thames Water Utilities (2009): Acted for Thames Water in a dispute concerning an escape of water and a claim under the Water Industries Act 1991. Simon has acted in several similar disputes.


Heifer International v Christiansen & ors: reported at [2007] EWHC 3015 (TCC); [2008] 2 All E.R. (Comm) 831; [2008] Bus. L.R. D49: A BVI-domiciled claimant brought proceedings against a Danish architect and contractors who had all been engaged for the purposes of constructing a very substantial domestic residence in the UK for occupation by the Russian owners of the claimant. Simon acted for the Third to Fifth Defendants who sought and obtained a stay of proceedings to Danish arbitration proceedings pursuant to an arbitration clause. Issues raised included: the incorporation of arbitration clauses; the Unfair Terms in Consumer Contracts Regulations 1999; and the potential unfairness of the arbitration clause.


British Nuclear Group Sellafield Ltd v Kernkraftwerk Brokdorf GMBH: reported at [2007] EWHC 2245 (Ch): Acted for BNGS in major contractual dispute concerning the reprocessing of nuclear waste. The case related to service agreements (supplemented by side letters for a nuclear fuel reprocessing service) whereby BNGS agreed to reprocess spent uranium fuel for the German defendants who operated nuclear power stations in Germany. The agreements dated back to the early 1980s and the side letter to 1989. Issues arose as to the construction, validity and enforceability of the side agreements and as to whether BNGS had failed to prioritise the reprocessing works in accordance with the agreements. There were complex technical issues relating to process of reprocessing nuclear waste and the science of stochastic modelling. Matters were complicated by the fact that many of the relevant events had taken place over 20 years ago. Issues of misrepresentation and rescission were central.


Kershaw v Kendrick Construction: Reported at [2006] EWHC 727 (TCC); [2006] 4 All E.R. 79; [2006] 2 All E.R. (Comm) 81; 109 Con. L.R. 42; [2006] C.I.L.L. 2359: Acted for main contractor against mechanical and electrical sub-contractor in 3 week arbitration concerning construction of 2 new blocks of wards at the Heartland Hospital, Birmingham. The parties contracted on the JCT DOM/2 1981 form of contract but agreed a “qualification” thereto. Issues on the appeal included: the material which the Court can look at on an appeal from an arbitration; proper approach to questions of law in the appeal; and the Court’s approach in reading the arbitrator’s Award.


Thomas Vale Construction v Brookside Syston Ltd: reported at [2006] EWHC 3637 (TCC); (2009) 25 Const. L.J. 675: Parties contracted on JCT Standard Form of Building Contract With Contractor’s Design 1998 edition incorporating amendments 1-5. Differences arose as to the parties rights and obligations following various adjudications. Simon acted for the developer employer. HHJ Frances Kirkham held that the developer was entitled to issue a withholding notice.


Department for Transport v Owen Williams Ltd & Ringway Highway Services Ltd: Acted on behalf of highways maintenance authority in dispute arising out of a major road traffic accident. A serious accident left the claimant with severe multiple injuries. The accident was alleged to have been caused by surface water on the highway. Issues concerned: whether the accident had been so caused and what was responsible for water on highway.


Embankment Place Hotels (Blackfriars) Ltd v Blackfriars Hotels Ltd: Instructed on behalf of the developer in relation to a series of disputes arising out of the construction of the Crowne Plaza hotel in the City of London. Issue between the developer and the owners was as to whether the hotel was operable within the meaning of the development agreement. Reported decision related to the validity of certain written notices.


Derwentside College v Project Genesis & Shepherd Construction: Acted for the claimant further education college in relation to a claim for defects following construction of the college.


Gleeson v Artisan (UK) Developments; Artisan v Peter Dann: Acted for structural engineers engaged to provide services for a development of new housing in Cambridge.


Hills Residential v ADP Ltd: Acted for defendant architect in case concerning alleged defects in new construction of social housing.


Robinson v Minoli: Acted for defendant architect in case concerning alleged defects in construction of substantial new domestic dwelling.


Taylor Woodrow v Pick Everard: Acted for defendant structural engineer in case relating to settlement of a large concrete tank at sewage works in Halifax.

Simon has an extensive and wide ranging adjudication practice which encompasses both substantive proceedings and enforcement. He is involved at all stages:

  • drafting Referral Notices and Responses
  • appearing at adjudication hearings
  • advising on all aspects of adjudication including questions of jurisdiction
  • hearings for enforcement of adjudication decisions
  • advising solicitors who have conduct of an adjudication and who want to discuss particular issues or tactics at short notice.

Featured Adjudication cases


Sindall v Solland: An early decision on the proper scope of the adjudicator’s jurisdiction and the extent to which issues have necessarily been referred to the adjudicator.


Dean & Dyball v Kenneth Grubb Associates: When does a dispute crystallise?; consideration of natural justice considerations.


A C Yule v Speedwell Roofing: Need for the decision to be reached in strict accordance with the timetable; extent to which one party can acquiesce to a request for more time for the decision.


Centre for Alternative Technology v Frank Galliers Ltd (2010) HHJ Kirkham: Enforcement of an adjudication decision and cross application for declarations.

Simon is instructed in a variety of contractual and technical disputes arising out of various aspects of the energy industry.

Featured Energy cases


British Nuclear Group Sellafield Ltd v Kernkraftwerk Brokdorf GMBH: Acting for BNGS in major contractual dispute concerning the reprocessing of nuclear waste. The case related to service agreements (supplemented by side letters for a nuclear fuel reprocessing service) whereby BNGS agreed to reprocess spent uranium fuel for the German defendants who operated nuclear power stations in Germany. The agreements dated back to the early 1980s and the side letter to 1989. Issues arose as to the construction, validity and enforceability of the side agreements and as to whether BNGS had failed to prioritise the reprocessing works in accordance with the agreements. There were complex technical issues relating to process of reprocessing nuclear waste and the science of stochastic modelling. Matters were complicated by the fact that many of the relevant events had taken place over 20 years ago. Issues of misrepresentation and rescission were central.


Acting in a major case arising out of the design and construction of an off-shore vessel for use in the oil industry.


Acting in a case involving the combined heat and power plant for use in a major London hospital on a PFI project.


Instructed in an arbitration in which he acted successfully for an engineer in relation to a combined heat and power plant.


Instructed in a multi-national ICC arbitration involving the piping for a desalination plant.

Simon’s practice encompasses all aspects of contract law.

Featured Commercial cases


Dispute between substantial airport retailer and Eurotunnel involving a claim for rescission of a 15 year concession of the passenger terminal buildings and a claim for damages amounting to £150 million.


Acting for British Nuclear Group Sellafield Ltd in major contractual dispute with overseas customers concerning the reprocessing of their spent nuclear fuel and the treatment of the resulting nuclear waste.


Various disputes relating to the leasing of aircraft and their component parts.


Acting in various disputes for major water supplier; contractual disputes with suppliers of equipment; cases arising out of the escape of water and consequent damage; cases arising out of the water authority’s duties under the Water Industry Act 1991.

Simon has extensive experience of professional negligence work in particular disputes involving construction industry professionals, lawyers, accountants, valuers, surveyors and architects.

Featured Professional Negligence cases


Acting in a number of cases involving allegation of architects’ negligence including acting on behalf of architects in a case arising out of the construction of a private residence which is due to come on for trial in Spring 2018.


Acting on various high value disputes for structural engineers in actions brought by main contractors and employers.


Acting for CGNU on a range of engineers’ negligence cases.


Acting for solicitors who had advised a property developer in relation to the termination of the main contract on a construction project.


mith v Peter North & Partners: Appeared as Respondent in the Court of Appeal in a surveyor’s negligence case where the Court of Appeal considered whether the cost of repairs could be recoverable.

Simon is a CEDR-accredited mediator.

He is also on the panel for Mediation for Construction, which specialises in providing mediation services to the construction industry.

Simon has experience of mediating a wide range of disputes and he brings his extensive experience of construction and IT disputes to his growing mediation practice. He has an informal and pragmatic style and is keenly aware of the commercial realities faced by the parties. He is not afraid to press the parties where necessary and his extensive first-hand experience of all types of construction and IT dispute resolution (including court proceedings, arbitration, adjudication and all forms of ADR) enable him to engage in serious reality testing if required.

Simon also accepts appointments as an arbitrator. He was one of a panel of three arbitrators in an LCIA arbitration concerning a computer game which went to a full hearing and resulted in an Award being handed down.

Society for Computers and Law Adjudication Panel

Following the launch of the SCL Adjudication Scheme in October 2019, Simon Henderson has been selected as one...

Chambers UK Bar Awards 2017

We are delighted to announce that Carolyn McCombe was awarded a Lifetime Achievement award and that Rachel Ansell QC and...

Commercial Law Update – IT Disputes Breakfast Seminar

Simon Henderson will be part of a panel discussion with experts from Taylor Wessing’s IT Disputes team on the common...

Simon Henderson joins M4C Mediators Panel

Simon Henderson of 4 Pump Court has successfully been appointed to the panel of M4C mediators. Simon adds "I am...

Instruct Simon

To instruct Simon please contact our clerks on +44 (0)20 7842 5521 or email clerks@4pumpcourt.com.

  • CEDR accredited mediator
  • Panel Member of Mediation for Construction (M4C)
  • LCIA
  • DIP Law (City)
  • BA (Durham) Philosophy 1st Class

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Call: +44 (0) 20 7842 5555

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