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.

I bought Primabella from her some years ago. Can't remember much other than it did produce a red cherry. I imagine she is saving seed herself given that they're all open-pollinated, and the pricing wouldn't leave much room for profit if she were buying from another grower. The price is very reasonable compared to others who charge closer to £5 for the same number of seeds!