Many thanks Martin for taking the time to answer. You've given me some
good pointers there. I think I should have given more info in my
original question though, in order to establish context.

It's really from an agricultural standpoint that I'm asking (doing
this on behalf of a collection of allotment holders around the
country). What I mean is something like, let's say someone near Lands
End - this climate is going to be:

1. Maritime
2. Very Mild definition of
3. avg last frost
4. prevailing airmass returning subtropical maritime
5. damp definition of

and for Inverness something like
1. maritime
2. cool definition of
3. average last frost
4. prevailing airmass returning polar maritime
5. wet definition of

and for East Anglia
1. modified maritime definition of
2. warm definition of
3. average last frost date
4. prevailing air mass ?
5. semi-arid definition of

It's the categories and definitions of stuff that I'm after

I thought it would be easier to find, given that there's a lot of work
in the area of climate change, and if we're going to measure that,
then we need to know the type of climate for a number of given
locations or areas to measure from!

In terms of climate classifications, I can readily obtain world
classifications, but am having difficulty for ones within the British
Isles, probably because generally we have weather rather than climate,
and that if we determine we have 'climate' there are many 'climates'
within the British Isles, I guess.

Anyhow, thanks for your help so far