2026 UK Capital Grants: proving shelterbelt condition for boundary funding

Defra’s Capital Grants scheme is the vehicle through which a significant fraction of UK farm-environmental capital spending is channelled, and the 2026 round — opening July 2026 with £225 million committed — is notably larger than recent years. Much of it is earmarked for boundary items (hedgerows, shelter belts, earth banks) and tree items (new planting, in-field agroforestry, woodland management), which makes shelterbelt owners and advisors natural beneficiaries.

The round also lands at a moment when the Rural Payments Agency has tightened its evidence expectations. “A photograph and a paragraph” is no longer sufficient above modest thresholds. This guide covers the items most relevant to shelterbelt work, the evidence the RPA now expects, how quantified porosity measurements fit into the evidence pack, and the failure modes that get applications kicked back.

The items that matter for shelterbelt work

The Capital Grants handbook lists items by code. The ones most directly relevant to shelterbelt and hedge work in the 2026 round:

Item	Purpose	Typical rate
BN5	Hedgerow restoration	~£14/m
BN7	Planting new hedge	~£22/m
BN11	Earth bank restoration	~£9/m
TE1–TE4	Tree planting (various densities and structures)	£1–5/tree
TE5–TE6	Tree maintenance and beating-up	varies
AGF1–AGF2	In-field agroforestry, various densities	per hectare, SFI

Shelterbelts often qualify for multiple items on the same parcel — a full restoration of a mixed shelterbelt may combine BN5 (for the hedge understory), TE5 (for management of existing trees), and TE1 (for beating-up with new planting). The RPA treats these as independent applications, which means each needs its own evidence. Figures quoted here are indicative of recent rounds; the 2026 handbook is the authoritative reference and supersedes these on any point of disagreement.

The evidence standard for 2026

The RPA’s expected evidence pack for a boundary item application, in rough order of weight:

1. Land parcel reference with GPS coordinates of the proposed work.
2. Pre-work photographs taken from consistent vantage points along the belt or hedge, dated and ideally GPS-tagged. Minimum four photos for a short feature, more for longer features.
3. Written condition narrative describing the current structure, the problems the work addresses, and the intended outcome.
4. Specification matching the item requirements — species, spacing, heights, planting density, as applicable.
5. Quantified structural evidence where available — recent addition to the expected pack for higher-value applications. Porosity measurements, canopy height measurements, stem density counts, or similar quantified indicators.

Item 5 is the one that has shifted most noticeably in the last two rounds. The RPA’s published guidance explicitly encourages “quantified structural indicators” for applications above £5,000 total value, and audit teams have begun asking for such indicators on smaller applications too when visual evidence alone is ambiguous. A porosity figure is a quantified structural indicator by definition.

Building a porosity-backed evidence pack

The working approach:

Capture. Follow the protocol in capture technique. At least eight frames along the belt length, evenly spaced, overcast or even cloud cover, phone or drone. GPS-tag every frame; modern phones and DJI drones do this automatically.

Analyse. Run the batch through the porosity analysis (ours or another method, provided it is documented and reproducible). Keep the CSV export — it contains the per-photo porosity, per-photo quality score, batch filtered average, and standard deviation.

Narrate. In the application’s condition narrative, reference the numbers directly: “The belt currently measures a filtered porosity of 68% (SD 9%, n = 11 frames, captured 2026-03-14), indicating a structure in decline and well outside the target 40–50% band for functional wind reduction. The proposed restoration (BN5 + TE5 + TE1) is projected to return the belt to the target band over a 5-year establishment period.”

Archive. Keep the original photos, the CSV, and a PDF report in a dated folder matching the application reference. Audit requests sometimes come three years after work completion; a consistent archive is the difference between a 20-minute response and a panicked week.

Why quantified evidence helps rejection rates

Three rejection categories account for the majority of kicked-back boundary applications.

Insufficient or inconsistent evidence. Photos without dates, photos from different vantages, photos that could be of any hedge anywhere. A GPS-tagged, systematically-captured photo batch addresses this directly.

Scope mismatch. Applying for hedgerow restoration on what the inspector judges to be an intact hedge, or applying for new planting where existing planting is present. A porosity measurement quantifies the scope question: a belt at 68% porosity is demonstrably in decline, and the application’s scope becomes defensible on objective grounds rather than inspector judgement.

Specification errors. Proposed species mix or planting density that doesn’t match the item requirements. This is a matter of reading the handbook carefully rather than quantified evidence, but a porosity assessment of the existing structure informs the specification — knowing where the structural gaps are guides which items to apply for.

Multi-year agreements: the time-series approach

Most Capital Grants boundary items have a 5-year maintenance obligation. The application commits you not just to doing the work but to keeping the feature in the intended condition for five years. Audit during that period is common, and the ability to demonstrate that the intended outcome is on track is the single most useful piece of evidence an agreement holder can present.

The approach: repeat the porosity measurement at fixed intervals. Year 0 (before work) establishes the baseline. Year 1 (post-work, in the same season as year 0) establishes the establishment-stage porosity. Year 3 demonstrates mid-period progress. Year 5 closes the agreement period and supports the audit response.

For this to produce useful evidence, the captures must be comparable: same season, same weather conditions where possible, same capture protocol, same analysis method. The development curve this produces is exactly the pattern auditors look for: quantified, comparable, traceable, documented.

Integration with SFI 2026

Many agreement holders combine Capital Grants (capital works) with SFI 2026 (ongoing management payments). Where a shelterbelt application overlaps SFI agroforestry actions AGF1 or AGF2, the same evidence base supports both. See our SFI 2026 agroforestry actions guide for the specific density tracking requirements for those actions.

Practical workflow

1. Identify the belt or hedge that needs work.
2. Capture a systematic pre-work photo batch (see capture technique).
3. Run the batch through porosity analysis. Retain CSV + PDF report.
4. Review the analysis to identify the specific structural issues (trunk gaps, canopy dieback, single-species weakness). This informs which items to apply for.
5. Draft the application using the porosity figures directly in the condition narrative.
6. Submit with the photo batch, the CSV, and the PDF report as supporting documents.
7. Repeat the measurement annually through the agreement period.

Frequently asked questions