Depends what you mean by 'mushy' some varieties are fleshier than others. Some can be quite solid with only a few seeds, others can contain more 'gel' and seeds and seem 'mushier'.

Add to that watering , feeding and lack of sunshine can also have an affect on the finished product!

What variety do you find particularly 'mushy'

DT Browns list the variety 'Favourita' in their catalogue!

http://www.dtbrownseeds.co.uk/catalogue/product_by_use/vegetable-seed/tomato-seed

Are they uneatable then?

yes they are eatable but not nice so may make soup thank you all for your replies

thanks Teegee now going to order catalogue for the tomatoes.