A fund-manager lending partnership: Redbourne Capital originates, underwrites and manages a unique specialist product — powered by GUMO, our property & company intelligence platform — and Castle Trust earns a secured, hurdle-protected return that scales.
With Sixth Street and Bayview behind you and a £1.1bn specialist property book, the mandate is clear: grow, at scale, without loosening on risk. The constraint isn't capital any more — it's disciplined origination and retention. That's exactly what we bring.
GUMO holds every charge Castle Trust has ever registered at Companies House — so before we've even met, we can show you your own book. This is a live read, today:
Live from GUMO (public Companies House charges + linked company/property/CCJ data). Companies House does not publish loan amounts, so £ exposure is not shown; every other figure is read directly from your registered charges.
were refinanced by someone else. Your short-term money matures — and the term business walks straight out the door to your competitors.
Take-out lender on redeemed Castle Trust charges. Your short-term bridging is being refinanced onto term BTL by mainstream specialists — the exact product our take-out captures.
We ran the same X-ray across your top competitors. Every specialist lender is losing its redeemed book to rivals — and because almost none file satisfaction at Companies House, most can't even see it happening. GUMO reads it from the Land Registry title trail.
| Lender | Book (charges) | Trend | Redeemed / leaked | Loses most to |
|---|---|---|---|---|
| Castle Trust | 2,927 | ↑↑ fastest % | 21% | OSB 22% · Shawbrook 9% |
| OSB group | 90,925 | ↓ off peak | 18% | TMW 18% · Paragon 15% |
| Together | 76,610 | ↑↑↑ surging | 16% | OSB 13% · Shawbrook 8% |
| Shawbrook | 30,496 | ↑ steady | 15% | OSB 14% · Paragon 8% |
| Landbay | 17,302 | → plateaued | 12% | Paragon 14% · OSB 13% |
| Hampshire Trust | 12,272 | ↑ growing | 10% | OSB 10% · Shawbrook 7% |
OSB and Paragon are the apex predators — a top-3 refinancer of nearly every lender here; the flow runs bridging → specialist term → prime BTL. The first specialist lender to adopt retention defends its book against the same rivals quietly eating it today — do it with us, or watch a competitor do it.
A single, unique product for experienced developers on conversion / PD schemes — the highest-quality, most defensible slice of development finance. We fund the works and take out the finished block, so the borrower never leaves.
The take-out is the answer to the leak: the term refinance that today goes to OSB/Shawbrook stays inside Castle Trust.
GUMO's Debt Advisory channel tracks every maturing UK property loan in your target band, refreshed nightly. In the £3–25M range, contactable maturing loans flow at a rate that clears your target several times over.
Plus a standing £9.35B of contactable, already-matured refinance-ready loans to work from day one — and a £36.2B market in £25M+ loans above the product cap, for when you stretch.
| How we reach each borrower (£3–25M band) | Mobile | ≥1 channel | Two rails | ||
|---|---|---|---|---|---|
| Reachable | 47% | 34% | 19% | 59% | 23% |
£ figures are GUMO's estimated-loan proxy (Companies House files no loan amounts); opportunity counts, maturity dates and contact flags are confirmed. Reachability rises to ~66% on the already-matured pool and improves as enrichment runs.
GUMO holds the UK planning system: every conversion to residential — office, commercial, industrial, hotel, care-home — with the developer behind it and their balance sheet.
| Conversion source (→ residential) | Schemes | 30+ units |
|---|---|---|
| Office → resi (incl. 2,368 PD / prior-approval) | 4,166 | 433 |
| Industrial / warehouse → resi | 4,908 | 426 |
| Retail / commercial → resi | 4,778 | 224 |
| Hotel / pub / leisure → resi | 1,893 | 101 |
| Care home → resi | 428 | 23 |
~20,500 are true change-of-use (non-residential source); ~22,400 are live (not yet completed). Qualifying-developer counts are a floor — many conversion SPVs file minimal accounts, so real balance-sheet strength is understated.
Everything you need to credit-decision is generated inside GUMO the moment a deal arrives — borrower, company, KYC, property and security, distilled into a standardised credit paper. The only things we wait on are external.
Officers, ownership, group, financials and adverse events — pulled and cross-checked automatically.
Automated valuation with confidence band, tenure, comparables and title — on any UK address.
A standardised, policy-checked credit paper produced in minutes — consistent and auditable.
Only the external valuation and the QS / development-monitoring surveyor reports sit outside GUMO — everything else is instant. Scalable and disciplined by design.
You're backing brokers who have originated and managed development finance for a decade — with the platform to now do it at scale.
An experienced development-monitoring credit team, an established external QS network for on-the-ground oversight — and 35 years of judgement now productised as a system.
Clean division of labour: you bring the balance sheet and earn a preferred return; we bring origination, underwriting, management and the unique product.
Castle Trust earns its hurdle on every pound, plus a share of the margin above it. Redbourne earns a low 0.5% management fee (a fund would charge ~2%), arrangement fees, and a carry share that grows as the book grows — aligning us with your mandate.
Split applies only to the margin above Castle Trust's hurdle. Redbourne keeps arrangement fees (fund-manager model) and the 0.5% management fee, paid quarterly in advance. Full interactive model provided separately.
A disciplined ramp: grow the standing book £250M a year to £750M by year three. Because the bridging recycles, that's roughly £1.25bn of lending written over the three years.
You have the platform and the capital. We have the tools, the distribution and a product the market doesn't offer. The target is realistic — together.
At a £5M average loan — 50 / 100 / 150 completed loans a year — this is how many maturing-loan leads we work each month to hit each year's target, across conversion rates from a conservative 5% to a strong 20%.
| Conversion → leads / month | Year 1 · £250M | Year 2 · £500M | Year 3 · £750M |
|---|---|---|---|
| 5% conversion | 83 | 167 | 250 |
| 10% conversion | 42 | 83 | 125 |
| 15% conversion | 28 | 56 | 83 |
| 20% conversion | 21 | 42 | 63 |
Larger loans need fewer: at the £7.5M band average it's just 33 / 67 / 100 completed loans a year.
Set against ~3,000 live contactable in-band opportunities plus ~50 fresh maturities a month, even the Year-3 stretch at 5% (250 leads/month) sits inside the pipeline; at a realistic 10% conversion, Year 3 needs ~125 leads a month. Supply is not the binding constraint.
Give the partnership an initial allocation into the conversion product. We'll originate, underwrite and manage it end-to-end — and report against your risk framework from day one. The book, the leak and the model are all real; the pilot makes them yours.