Where should i learn to snowboard?

On a snowy mountain.

there is a place in lilton keynes (dunno how far away you are) but they have an indoor ski slope. the whole place is called xscape they also have things like rock climbing MJ

colorado in america my son did.

Any place where people ski would also have snowboarding lessons. I guess it depends where you live.

i would go somwhere where there is both snow and hills, failing that try muddy hills

In the snow...!

It depends where you live, but the artificial slopes around the country are great with some top instructors. Tamworth is excellent

on a snowy mountain would be a good place to start

Tamworth Snowdome, or sheffield ski village, try to actually learn on snow because dry slopes are a world away from the real thing and boarding on a dry slope is alot harder and more dangerous!!!