Thirteen years, multiple trials, two High Court appeals, a Court of Appeal application and tribunal proceedings, all over a strip of garden a few inches wide. That is Gibson v New (2026) EWHC 1862 (Ch), handed down by Mr Justice Thompsell on 31 July 2026 [1]. It matters to anyone weighing up whether to instruct a boundary dispute surveyor in Wimbledon, because in 2015 the parties had already agreed that a surveyor's determination would settle the line. It was never implemented, and the result was another decade of litigation and a final award of £9,000. For owners of Victorian and Edwardian terraces in Wimbledon Village, Raynes Park and Southfields, the lessons are direct.
Key Takeaways
- Gibson v New ran for about 13 years and ended with damages of £9,000 and a costs order in the Gibsons' favour, reduced by 1% [1].
- A 2015 mediated settlement provided for a surveyor's determination of the boundary, but it was not implemented [1].
- An expert determiner under a settlement plays a different role from an expert witness under CPR Part 35 [2][3].
- Cunningham v Holehouse and Todd v Marsh show that title plans are general boundaries and that informal emails rarely bind [4][5][6].
What Happened in Gibson v New and Why It Lasted 13 Years
The dispute between neighbours concerned a strip of garden land a few inches wide and involved multiple trials, two High Court appeals, a Court of Appeal application and First-tier Tribunal (Land Registration) proceedings [1]. The turning point came in 2015, when the defendants agreed at mediation to accept a surveyor's determination of the boundary. That should have ended the matter. Instead, the determination was not implemented and the case returned to court [1].
HHJ Duddridge found for the Gibsons and awarded £9,500. On appeal, six of seven grounds were dismissed and most findings were upheld. The appellants succeeded in part on one ground only: a short period in which the Gibsons could have mitigated their loss, cutting damages by £500 to £9,000. The Gibsons were awarded costs as the successful party, reduced by 1% to reflect the appellants' limited success. This account comes from Holmes & Hills Solicitors, who acted for the Gibsons [1]. The case did not last 13 years because the law was unclear; it lasted because an agreed mechanism for ending it was not carried through.
What a Boundary Dispute Surveyor Does in Two Different Roles
A surveyor can enter a boundary dispute in two different capacities, and confusing them is one reason settlements unravel.
Expert determiner under a settlement agreement
When neighbours settle, often after mediation, they can agree that a chosen surveyor will decide where the boundary lies. If the clause is properly drafted, the determination binds both sides by contract, and the surveyor decides rather than advises. This is the route Gibson v New took in 2015. The gap between agreeing a determination and implementing it is where the next decade of litigation lived [1].
Expert witness under CPR Part 35
Under Part 35 of the Civil Procedure Rules, an expert's overriding duty is to the court, not to the paying party, and under CPR 35.7 the court can direct a single joint expert for both sides [2]. The RICS professional standard "Surveyors acting as expert witnesses", 5th edition, effective from 30 November 2026, reinforces the duty to the tribunal, independence and a clear record of instructions [3]. Wimbledon Surveyors provide both boundary determinations and expert witness reports, and confirm at the outset which role is being performed, because the two cannot be mixed. An expert determiner ends the argument by contract; an expert witness informs a judge who ends it by judgment.
The Costs Picture: £9,000 Against 13 Years of Litigation
The damages were £9,000 after about 13 years of litigation across several courts and a tribunal [1]. The published account does not set out the parties' legal costs, and no figure should be assumed. The CPR requires cases to be dealt with at proportionate cost, and a strip a few inches wide is about as low in value as land disputes get [2]. Two features stand out:
- The winner recovered costs, but not all of them. A 1% reduction shows that success on six of seven grounds does not guarantee full recovery [1].
- Mitigation cut the damages. The £500 reduction turned on a short period in which the Gibsons could have reduced their loss [1].
A few inches of a rear garden in Southfields or a shared side return in Raynes Park will almost never be worth the cost of a trial.
Lessons from Cunningham v Holehouse and Todd v Marsh
Cunningham v Holehouse: general boundaries and competing experts
In Cunningham v Holehouse (2026) UKFTT 771 (PC), decided by Judge Laura D'Cruz on 1 May 2026, the First-tier Tribunal cancelled a determined boundary application over land at Colne, Lancashire, after each side's expert surveyor took a different view [4]. A "15 feet" figure on a 1987 plan marked "for identification purposes only" was indicative only, and the boundary followed a fence erected after the conveyance. The judge's preliminary view was that the unsuccessful applicants should pay the respondents' costs [4][5].
A title plan shows a general boundary under section 60 of the Land Registration Act 2002, not the precise line [7]. A determined boundary application under rule 118 of the Land Registration Rules 2003 needs robust evidence, or the applicant may fail and pay costs [5].
Todd v Marsh: informal emails are not boundary agreements
In Todd v Marsh (2026) EWHC 1701 (Ch), the High Court held that 2019 emails about sharing fence repair costs, referring to "your side" and "our side", did not create a boundary agreement. The strip of about half an acre was not trivial, so any agreement needed writing under section 2 of the Law of Property (Miscellaneous Provisions) Act 1989. Both experts agreed the paper boundary followed an old tree line, and the appeal failed [6].
How a Boundary Dispute Surveyor Reads Wimbledon's Terraces and Gardens
Wimbledon's Victorian and Edwardian terraces were often laid out from a single estate plan, with narrow plots, shared side returns and long rear gardens. Over a century, fences have been replaced and side returns infilled, so the physical line and the paper line drift apart. A chartered surveyor will typically draw on:
- A measured survey of the plot and its neighbours, recording walls, fences, paths and building lines.
- Conveyance plans and deeds, especially the first conveyance that split the plot from the estate.
- Ordnance Survey mapping at different dates, remembering that OS maps show features, not legal boundaries [7].
- Photographs and physical features: historic and aerial images, old fence posts, changes in brickwork, drainage lines and the alignment of neighbouring terraces.
Weighing this evidence, the surveyor forms a view on where the legal boundary most probably lies. In many terrace disputes the line follows a long-standing fence, as in Cunningham [4].
Practical Steps Before Instructing a Boundary Dispute Surveyor
- Gather the paperwork. Obtain the title plans for both properties and any pre-registration deeds.
- Record the position now. Take dated photographs before anything is moved.
- Talk to the neighbour early. Disputes harden when nobody speaks until a fence is replaced.
- Commission a joint or independent survey report. A single surveyor both sides can rely on often resolves the question without a court.
- Use mediation and expert determination. A properly drafted clause can end the dispute by contract. Then implement it: record the agreed line and move the fence.
- Treat litigation as the last resort. Gibson v New shows that even a winner can spend over a decade securing a modest award [1].
Frequently Asked Questions
Does my title plan show the exact boundary?
No. Under section 60 of the Land Registration Act 2002, a registered title plan shows a general boundary unless it has been formally determined [7].
What is the difference between expert determination and expert evidence?
Expert determination is a contractual process in which the parties agree that a surveyor's decision binds them. Expert evidence is given to a court under CPR Part 35, where the expert's duty is to the court [2].
Can an email exchange with my neighbour fix the boundary?
Rarely. In Todd v Marsh, informal emails about fence costs did not create a boundary agreement, and where the land is not trivial, section 2 of the 1989 Act requires writing [6].
Should I apply for a determined boundary?
Only with strong evidence. In Cunningham v Holehouse the application was cancelled after competing expert views, and the applicants faced a likely costs order [4].
Conclusion
Gibson v New is a cautionary tale about implementation rather than law. The parties had the right idea in 2015 when they agreed to a surveyor's determination. Because it was not carried through, a dispute over inches of garden ran for about 13 years and ended in damages of £9,000 [1]. Cunningham and Todd add the reminders that title plans show general boundaries and informal agreements will not do [5][6].
Next steps for Wimbledon homeowners and solicitors: gather the deeds and title plans, photograph the current position, and commission a measured boundary survey early. If the neighbour disagrees, consider a single joint expert or mediation with a binding expert determination clause, then implement the outcome in full. A boundary dispute surveyor who knows the terraces of SW19 can usually settle the question before litigation costs start to run.
References
- Holmes & Hills, "Neighbour dispute ends after 13 years: High Court upholds damages award in long-running boundary battle", 4 August 2026. holmes-hills.co.uk.
- Ministry of Justice, Civil Procedure Rules Part 35. justice.gov.uk.
- RICS, "Surveyors acting as expert witnesses" (5th edition). rics.org.
- Cunningham v Holehouse (2026) UKFTT 771 (PC), Find Case Law. caselaw.nationalarchives.gov.uk.
- Charles Russell Speechlys, "General boundaries rule succeeds in boundary dispute between neighbours", 2026. charlesrussellspeechlys.com.
- Charles Russell Speechlys, "No trivial matter: what Todd v Marsh tells us about informal boundary agreements", 2026. charlesrussellspeechlys.com.
- Land Registration Act 2002, section 60. legislation.gov.uk.