Hi Michelle - you really need to put the town where you live to get info for seeing something like the pans - as BBWC notes, shops in Bristol have them - and there is an excellent cookware shop in the middle of Bath up the street from the Pump Rooms too if you are in the S/West.
Independent cookware shops are your best bet - look in the local Yellow Pages and go to see them near by if you are not in the West Country to use the links suggested.
If you are investing in copper pans and no one has mentioned it, remember to get a cleaner for them too - Bar Keepers Friend is readily avilable to use on the outside, and just use soap and water on the inside to keep them at their best.
The most expensive pans have tin linings, otherwise you will have steel, which can be a a bit 'sticky' to cook with. Get the tin lined ones as the best option if you can.
You will need to get used to the heat transfer of the pans too - copper is used as it is a really good conductor of heat so you need less heat to cook with. And do not use metal tools - spoons etc. Always use wood or (heatproof) plastic.
Last note - sugar will attack the pans so only add to a recipe after the other ingredients - it 'pits' the pans after a while if not added at the proper time, and also do not put the pans in a diswasher - the detergents are far too agressive.
Have fun shopping!