Allotments 4 All

I saw these last week and finally succumbed, bought the red grape plant but they had white ones too, variety is Frankenthaler, going to try it outside and hope that the graft will give it the strength to fruit.

I nearly got into car to buy these plants after seeing your post.... ...but then though to google the name...
AND the red grape turns out to be same as Black Hamburg!!!
http://www.gardeningexpress.co.uk/ProductDetails.asp?ProductID=1926

I've got one of these in polytunnel and where I am, this variety does need to be grown undercover to get best out of it.
I wonder what variety the white one is......

Went back to Asda ... the white grape was called Bianca (er .... that just means White, right?) and they also had a new black grape called Boskoop Glory, which I am tempted to go back and buy having seen it's an outdoor variety.

https://www.rhs.org.uk/plants/details?plantid=4609