Returning money owed (£ 50K)to family member - advice needed please

[Swooshstar]

Hi,
I would like some advice.

My brother gave me around £50K to help me buy my first property a few years ago.
He would now like the money back, I am in a position to return his money.

The conveyancing team at the time asked him to write a letter stating that the money is a gift repayable upon sale of the house.

I was planning on returning the money and asking my brother to sign a document to acknowledge receipt of his money and to confirm there are no further outstanding payments to be made to him in the future. I am not planning on selling the house.

How would I go about preparing such a letter such that it is recognised as a valid legal document?
For example, is there a legal process through which this takes place, or does this document have to be signed in front of a certain type of witness?

Many thanks

[dslippy]

No formality is required.

I am not sure what a repayable gift is, but hey . .

[Swooshstar]

No formality is required.

I am not sure what a repayable gift is, but hey . .

Thanks.

I was more interested in creating a legal document in case there is a legal dispute in future. For example, if there is a divorce/claim on house/claim that money was not repaid partially/completely etc.

[atticus]

If you really want to, you can instruct a solicitor to draft a deed of acknowledgement and release.

I agree that this is unnecessary, however.