Hi Sue,
I use the One Touch Ultra meter. I've tried others but keep coming back to this one. I like it's simplicity. It does use more blood than some other meters though.
Another popular one in the the UK is the Accuchek Aviva. It's one of the easier ones to find in UK pharmacies, and only uses a small blood sample.
If you like I can send you a One Touch Ultra meter (I have some unused meter kits in my 'cat cupboard').
Eliz