We have just enjoyed our first apple puree of 2015. The variety is Reverend W Wilks. An early variety and even better than Bramley, in my opinion. But it doesn't keep well, so we shall have to freeze it.
I can recommend it as an excellent cooking apple. Sharp but needing very little sugar. The puree is light and fluffy but is free from any of the grittiness of Bramley puree. The fruits are large while the tree is dainty (unlike the big lummox, Bramley) so it is an ideal variety for smaller gardens. It doesn't mind bad weather and seems to be resistant to canker (we are the canker capital of the UK, I think)
The only downside seems to be that it might be a biennial bearer but I have no experience of that (yet).