The Stokes v Cambridge Corporation (1961) Legal Precedent
In *Stokes v Cambridge Corporation (1961) 13 P&CR 77*, the Lands Tribunal established the definitive valuation method for land required to unlock access to an adjoining development site.
The court held that a willing buyer and willing seller in an open market would reasonably divide the net development profit. After deducting developer construction costs, developer profit (typically 20%), infrastructure expenses, and existing use value, the net 'marriage value' was divided:
• One-third (33.33%) allocated to the ransom strip owner providing access.
• Two-thirds (66.67%) allocated to the developer taking the operational planning and construction risks.
When Does the Percentage Shift Between 15% and 50%?
While 33% is the traditional court starting point, judicial decisions have varied the ransom share depending on commercial realities:
• Lower Percentage (15% to 25%): Where alternative access routes theoretically exist, where planning permission is speculative, or where the ransom owner's strip requires extensive engineering works.
• Higher Percentage (40% to 50%): Where the ransom strip is the sole physical route into an allocated site, planning consent is fully granted, and development cannot proceed by any other means (*Batchelor v Kent County Council [1992]*).
| Scenario | Typical Ransom % | Commercial Justification |
|---|---|---|
| Sole Access, Full Planning Consent | 33% – 45% | Site completely landlocked; maximum developer urgency |
| Alternative Access Possible at Greater Cost | 15% – 25% | Capped by the cost of constructing the alternative access route |
| Strip Required for Underground Services Only | 10% – 20% | Surface access already exists; ransom is utility-specific |
| Multiple Ransom Strips Required | 15% – 20% each | Aggregate ransom payout cannot exceed overall project feasibility |
Can You Claim Adverse Possession Over a Ransom Strip?
Developers frequently attempt to defeat ransom strips by claiming adverse possession (squatter's rights).
Under the Land Registration Act 2002, claiming adverse possession over registered land requires 10 years of factual possession with the intention to exclude the world. However, under Schedule 6, HM Land Registry will notify the registered ransom owner, who can issue a counter-notice that immediately defeats the claim unless a narrow boundary exception applies. Consequently, negotiation remains the primary commercial path.