Reclaiming VAT back

Hi, I would like to reclaim VAT on good/services which I’ve purchased prior to becoming VAT registered. Some dates back a few months while some goods date back about 2-3 years ago (still in use now-e.g some office supplies) I read that I may need to provide evidence to reclaim these VAT back and was wondering can you please let me know that evidence(s) are acceptable please?

Hi,

You can find guidance here:

VAT guide (VAT Notice 700)

Thank you.