Balancing rights of light and urban development: Takeaways from the Ludgate House judgment

Summary

The High Court has refused to grant an injunction to two residential leaseholders of flats in Bankside Lofts (the “Claimants”) who sought  to restrain interference with their rights of light by the Arbor Building (“Arbor”)  being part of the Native Land (the “Developer”) Bankside Yards development, instead awarding significant  ‘negotiating’ damages, albeit much lower than the Claimants sought, in a landmark rights of light decision (Cooper & Ors v Ludgate House Ltd [2025] EWHC 1724 (Ch)). 

Rights of light cases which make it to court are few and far between and understandably garner a great deal of interest in the property industry (will they / won’t they get an injunction?), so it’s right to call this a landmark decision for that reason alone.  And some view these judgments as prophecies for future court decisions on whether to award injunctions to restrain development which interferes with rights of light.

But it’s important to remember that the court has a broad discretion as to whether to grant an injunction or award damages in response to a right of light infringement and much turns on the specific facts of the case, and the Ludgate House decision is no different (and arguably the facts here were especially unique and peculiar in view of the interaction between private rights of light and public powers to appropriate under Section 203). So, we can’t say that the pendulum has swung from an injunction being likely (post Beaumont v Florala [2020]) to an injunction now being unlikely - the next case may decide an injunction is appropriate on its own facts.   

Nonetheless, the Ludgate House decision provides useful reminders as to:

• how a court will assess the adequacy of light. 
• how the court will (post Fen Tigers [2014]) approach the exercise of its discretion as to whether to grant an injunction or damages instead, 
• how damages (instead of an injunction) will be assessed, and  
• the importance of good conduct (the Court’s finding that the Developer  had not acted unfairly being an important factor in the Court’s ultimate decision that an injunction would be disproportionate). 

The judgment also provides important guidance on the approach to assessing a right of light injury in circumstances where the majority - but not all - of a development site has been acquired by the Local Authority for planning purposes under Section 203 of the Housing and Planning Act 2016 (“Section 203”) thereby overriding the Claimant’s ability to claim an injunction or “negotiating” damages for that part of the development (albeit these facts are unique to this case so may never be repeated!).  

Here, Arbor was not able to benefit from the protection Section 203 affords because Arbor was already constructed before Section 203 was deployed (as Section 203 does not backwash to cleanse rights of light impacts which might already have been caused). So all eyes were on Arbor.

The Parties’ positions

The Claimants, leaseholders of two flats at Bankside Lofts, London, sought an injunction in the High Court requiring demolition of parts of a completed office building, Arbor, alleging that it interfered with their rights of light. This was in reliance on the Waldram method for assessing rights of light which has been used in the industry for nearly 100 years. Alternatively, they claimed damages based on a hypothetical negotiation between the parties, in which the Claimants had a potent negotiating position, for a share of the Developer’s profit. 

The Defendant, Native Land as the Developer of Bankside Yard, argued that that there was no actionable loss of light (discounting Waldram as outdated and instead extoling the virtues of a modern “Radiance” study), or if there was, it was not substantial; that the correct legal and technical approach did not support the Claimants’ case; that an injunction would be disproportionate and futile; and that, in any event, damages should be modest and based on diminution in value of the flats and not a ransom or negotiating basis. 

The Decision 

The Court affirmed the modern approach of the Supreme Court in Lawrence v Fen Tigers [2014], being the Court had to take into consideration all relevant factors when exercising its equitable discretion to award an injunction or damages in lieu rather than confining itself to an application of the rigid hurdles in the “Shelfer test” (from an 1895 case).  

On the evidence the Court found that the Developer hadn’t acted in a high-handed manner, such that it was appropriate for it to take into consideration oppression to the Developer of the cutback envisaged by the injunction. But the planning history of the development played a part in that story. 

Refusing an injunction, damages in lieu were granted on the basis of negotiating damages by reference to a hypothetical negotiation between the parties which contemplated the extent and nature of the interference with light, the value the Developer obtained from it, the prospect of an injunction, the permanent impact on the use and enjoyment of the flats as a result of the lost light, the value of the Claimants’ flats, and the number of other Claimants on the valuation date, before adjusting the deal for what would ‘feel right’. 

Perceived gain from the offending parts of the building was assessed at 12.5 %, and a ‘pot’ of £3.75 million, which was then hypothetically distributed between the owners affected by the development and adjusted down in view of the value of the Claimants’ flats.  

The Court also found, in the first known decision regarding the interplay between the effect of Section 203  and the ability to enforce private rights of light, that light which could not in practice be protected by injunction (being the light loss caused by the remainder of the intended Bankside Yard development subject to the Section 203) should be disregarded when assessing the interference caused by Arbor (which was not subject to Section 203). 

Actionability: Waldram or Radiance?

The Court found that the traditional Waldram methodology can still be used to measure the actionability of light interference. It produced sufficiently robust results as against the modern ‘Radiance’ methods, which corroborated rather than challenged the calculations in this particular case, but the Court accepted that Radiance would have value in other scenarios. 

Discretion: Refusal to grant an injunction

The judgement set out several reasons for refusing injunctive relief:

• Enforcement: None of the Arbor tenants were joined to the proceedings, so there would be a substantial delay before such an injunction could be enforced against them (albeit this was not determinative). 
• Futility and waste: Demolishing Arbor would likely be pointless. There was a good prospect that the Developer would re-build Arbor, or an even larger building, and seek protection under Section 203. It would also be a waste of resources. 
• Developer conduct: 
  • Albeit the Court found that the Developer had carefully stage managed the timing and content of its approaches to the impacted neighbours – starting negotiations but not making offers to settle adverse claims until the Arbor development was out of the ground - the Developer’s conduct was not criticised. 
  • The judgement specifically acknowledges that risk taking is inherent to commercial activity, and the Developer wanted to get on. 
  • However, a factual finding that when the Developer started the Arbor development it – rightly - didn’t think it would cause an actionable interference with the Claimants’ rights of light, was also relevant to the decision that the Developer had not acted unfairly. The prospect of Arbor causing an actionable impact on the rights of light of the Claimants only arose after Arbor completed and the Section 203 powers were exercised meaning that the remaining Bankside Yards development could be constructed without risk of an injunction. The laser focus was suddenly on the extent to which Arbor now caused an actionable rights of light injury to the flats assuming the remaining massing permitted by Section 203 was constructed.
• Disproportionate Harm: The result of the Developer’s good conduct was that it had not disentitled itself from the argument that it would be oppressive for an injunction to be granted against it. The harm to the Developer, its tenants, and the wider public (both economic and environmental) from demolition would outweigh the loss suffered by the interference with the Claimants’ rights of light. 
• Public Interest: The Developer’s planning permission and the local authority’s exercise of Section 203 reflected the public benefits of the Bankside Yards development.
• Adequacy of Damages: Damages were considered an adequate remedy. The loss was to the use and enjoyment of the flats, not their market value, and could be compensated financially.

Damages: The Court’s Approach

Having refused an injunction, the Court considered the appropriate measure of damages:

• Negotiating Damages: The Court awarded damages on a “negotiating” or “Wrotham Park” basis—what the hypothetical parties would reasonably have agreed as the price for releasing the Claimants’ rights of light, assessed at the time just before Arbor’s construction began (August 2019).
• Assessment of Quantum: The Court rejected both the Claimants’ and the Defendant’s extreme positions. The Claimants’ approach, seeking a very large share of the uplift in development value, was excessive. The defendant’s reliance on low settlements with other residents was also discounted.
• Methodology: The Court found that the hypothetical negotiation would have reached a conclusion based on several factors: 
  • Reasonable parties – the Claimants would be willing to release their rights for a proper price, and the Developer would have paid it but not for a large ransom. Interestingly, the Court found that the prospect of an injunction was relevant rather than the likelihood of one being granted.
  • Settlement fund – the Developer was sophisticated and would, in deciding what to offer the Claimants, consider that claim in concert with the others in its rights of light budget. 
  • Perceived gain – the Developer’s profit would be a main focus of discussion but not the only one. The Court found that the gain attributable to the interference with the various rights of light claims impacting the Developer’s scheme would have been around 12.5%, or a ‘pot’ of £3.75 million. 
  • Extent of loss – the parties would then have agreed, according to the extent of the interference with the rights of light, the extent of their claims to the pot. 
• Final Awards: £500,000 was awarded to the Powells (flat 605) and £350,000 to Mr Cooper (flat 705). These sums were substantial in relation to the value of the flats and reflected the loss of amenity and enjoyment but were not so high as to constitute a windfall.
• Diminution in Value: Damages based on diminution in value, which Claimants are confined to where the local authority exercises Section 203 powers, were considered but not awarded, as they would not adequately compensate for the loss of use and enjoyment as a result of the loss of light in perpetuity by the flats owners.

Section 203: What role should this play in the assessment 

The Ludgate House decision addresses, for the first time, how to assess actionable loss and remedies in a scenario where Section 203 has been invoked for part of a development but not all of it (as with Arbor, which was built before the Section 203 resolution, and the remainder of the Bankside Yards scheme, which was protected by Section 203). 

The Court held that, for the purposes of assessing whether there is an actionable interference by a building not protected by Section 203 (such as Arbor), the assessment of actionable interference is made as if the Section 203 development is already in place, because the adjoining owner cannot protect that light.

This is a significant clarification for practitioners: when part of a development is protected by Section 203 and part is not, the actionable loss caused to neighbours by the unprotected part is assessed having assumed the light which will be lost because of the eventual development of the protected part has been lost already. 

Conclusion

Despite the attention grabbing headline – being that actionably impacted on residential flat owners who genuinely wanted to protect their light did not obtain an injunction – the decision is reassuringly consistent with what we already know: an injunction remains the primary remedy for an actionable interference with a right of light, but not every actionable loss of light will justify an injunction. Courts will weigh the actual impact on use and enjoyment of the property, the scale of the interference, and the broader public interest, including the value of completed developments and the potential waste of resources if demolition is ordered. It’s all about what is proportionate taking into account and balancing all of the relevant considerations. 

The judgment also affirms what we thought we knew about how the court will assess actionable loss. The traditional Waldram method remains the industry standard for assessing sufficiency of light, but the Court acknowledged the value of modern methods, provided they are properly calibrated and interpreted.

Again, it remains that negotiating damages are available where an injunction would otherwise be granted and are based on a hypothetical negotiation between developer and neighbour in which the developer will buy the neighbour’s rights, with each party aware of the value of the benefit of the rights of light to the other. Whilst the developer’s profit from breaching the rights of light will be relevant, so will the value of the injured properties (the Court commenting on the potential share of profit not necessarily being reasonable when taking into account the impact on the value of the flats).  And, as in Tamares [2007], the Court awarded a sum which “felt right” (albeit with a subtle change of language to an award which the Court considered would “reasonably have been negotiated”).  

For practitioners, the message is – or remains - clear: early engagement, a realistic assessment of remedies, and a robust understanding of both legal and technical aspects are crucial. The court expects parties to act reasonably, to consider the proportionality of their claims, and to be prepared for outcomes that balance private rights with the realities of urban development.

For more information please contact Nick Lloyd, Ben Kelly and Henry Powell