Can anyone identify this yellow tomato please?

[supersprout]

Earlier this year I bought 24 heritage tomato plants from a specialist nursery in Downham Market for a fiver They had no labels, so we don't know the varieties.

This one is pure gold! Soft and sweet, full of flavour but not too acid. I'd like to grow them next year but in case we're too greedy to save any seed ...

Could anyone identify the variety please? It's slightly paler than in the photo, pale lemon yellow rather than orange/gold yellow, and all of the fruit have that bump on the bottom.

[Acorn]

Could it be Plum Lemon Tomato? http://www.ghorganics.com/PlumLemon.html

[User Removed]

I think it is Russian Plum Lemon Tomato (a.k.a Wonderlight Tomato)
It produces an abundance of lemon shaped, 4 to 6 oz. yellow tomato fruits. This tomato offers a great flavor and makes excellent sauce. Excels in the short seasons of northern areas
Im not sure how many garden centre sell them though
Hope that helps

[Acorn]

You can buy the seeds online:
http://www.readytogrow.co.uk/seeds/p...on_Tomato.html
http://www.seedfest.co.uk/seeds/toma...html#plumlemon

[supersprout]

Oo thank you for your suggestions and those useful links!