The message
from "Steve Warren @ The UK Speedtrap Guide"
contains these words:

I am looking to plant two apple trees in the front garden. I have two good
size areas one for an eating apple and one for a cooking apple, well that's
the plan.
I would like to let then get to about 9-10 ft and then keep them that way.

Ask a reputable specialist fruit supplier, what two varieties would do
well **in your area** and fertilise each other.

Janet.