Hello. What is the best place to buy a genuine antique pocket watch in the U.K.?

If you want to make sure it is a genuine antique then there are lots of jewelers that will sell antique watches.

You will get the best prices and choice at a large Antique fair. They are usually run once a year at large venues like race courses and disused airfields - they are huge! 

Look online or ask at local antique shops.

You can also haggle a bit on price depending on time of day.

Using a pocket watch will make you look like a Tosser and Wanker 

Most antique shops usually have some watches. There are many specialist watch dealers who sell nothing but antique watches..

A "genuine antique" doesn't mean it's any good.

There is no shortage of antique watches of every kind. Just visit two or three antique shops in your area and ask.

Any good, professionally-run antiques shop - preferably not in a big city or a touristy area.

An antique shop.