Charity Accounts document retention period

ToyLibrary

Hello. I hope you don't mind me posting my question here.

I've just taken over as a new Treasurer for a small, local charity (Toy Library for pre-school children). They are registered charity and they file their annual accounts on charity commission website. Annual turn over is around £7k.

Their previous Treasurer has given me 3 carrier bags full of documents (they are kept in paper files, per category). Does anyone know the retention period for charity accounts papers please? Most of them are paid invoices, expense claim forms, time sheets for self-employed contractors, etc. I had a quick look at the charity commission website, but I still have no idea.

Many thanks for your kind help!