UK seed producers (not the big boys)

Has anyone bought tomato seeds from "catherinemaureen1961" on ebay? Not sure what the source of the seeds is but she has a good variety of unusual seeds (99 to be exact). Most of them cost £1.38-£1.44 for 20 seeds. The more you buy, the cheaper they are.  P&P is £1.
I noticed Paul Robeson on  the list.

Yes, I have, back in 2022, for a  couple of obscure beefsteak tomatoes.  All went well and I can't remember any problems,  germination was ok. I'm tempted by Paul Robeson but I've already sown far more tomatoes than I need. I daren't start any more. Perhaps on the wish list for next year.