What is a disponor letter?

A disponor letter is an informal name for the Certificate of Compliance required to satisfy a Form LL Fraud Restriction on a property title. It is a signed letter from an independent solicitor confirming that the person executing the transaction is the same person as the registered proprietor.

How much does a disponor letter cost?

FormLL charges specialist confirmed within 24 hours for a standard disponor letter with a 3-5 working day turnaround, or urgent same-day service available for Fast Track guaranteed next working day.

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Disponor Letter Explained

Disponor Letter — What It Is and How to Get One Fast

Published by FormLL · England & Wales · Last updated May 2026

If your solicitor, mortgage lender, or their panel firm has asked you to obtain a disponor letter, you may have searched the term and found very little clear information. That is because disponor letter is an informal name — widely used in the conveyancing industry — for the Certificate of Compliance required to satisfy a Form LL Fraud Restriction on your property title.

What Does Disponor Mean?

A disponor is the legal term for the person who transfers or conveys a property interest to another party. In a sale, the seller is the disponor. In a remortgage, the property owner executing the mortgage deed is the disponor. The word comes directly from the formal wording of the Form LL restriction itself.

The Many Names for the Same Document

Used by lender panel firms

Disponor letter

Land Registry / solicitors

Certificate of Compliance

General conveyancers

Form LL certificate

Some lenders

Anti-fraud restriction certificate

Optima Legal / Integra

Form LL verification certificate

Informal usage

Deed of compliance

The Prescribed Wording

Regardless of what it is called, the document contains the same prescribed wording set by Land Registry:

"I [name of Solicitor], of [firm name], certify that I am satisfied that the person/persons who has/have executed the [Mortgage Deed / Transfer] submitted for registration is/are the same person/persons as the proprietor/s of the property known as [address] registered at HM Land Registry under title number [title number]."

Who Can Issue a Disponor Letter?

Only an independent, SRA-regulated solicitor can issue a disponor letter. This means:

Your remortgage solicitor cannot issue it — they act for your lender
Your lender's panel solicitor cannot issue it — also not independent
It must come from a completely separate firm with no connection to the transaction

This is why most people get stuck. Their remortgage solicitor tells them they need a disponor letter but cannot provide one themselves. FormLL connects you to a specialist within 24 hours — no searching, no cold calling, no delays.

Pricing

Standard — specialist confirmed within 24 hours: 3–5 working days, best effort
Fast Track — urgent same-day service available: Guaranteed next working day
Additional owners — £50 inc VAT per person beyond the first

Need a disponor letter?

Specialist confirmed within 24 hours. Wet ink signed letter emailed directly to you. Fixed fee.

Get Your Disponor Letter — £160 Fast Track — guaranteed next working day — £240

Optima Legal has asked for a disponor letter — what do I do?

Optima Legal is one of the UK's largest lender panel firms and regularly handles remortgages involving Form LL restrictions. When booking through FormLL, note that Optima Legal is involved — our specialists are experienced in producing certificates to their required wording.

Is a disponor letter valid for multiple transactions?

No. Each disponor letter is specific to one transaction. If that transaction does not proceed, a fresh letter is needed for any future transaction.