There are many ways, but the simplest is to choose an online broker. Your bank may already offer it, and it might be cheaper to you as a customer, but probably not. You'll be looking at around £10 per trade (buy or a sell) on UK Shares.
There are quite a few brokers to choose from, so have a look around and see what's going on. Here are two off the top of my head:
https://www.barclaysstockbrokers.co.uk/Pages/index.aspx
http://www.iii.co.uk/sharedealing ( they also own http://www.shareprice.co.uk/ which lets you do mobile trades ).
There are quite a few brokers to choose from, so have a look around and see what's going on. Here are two off the top of my head:
https://www.barclaysstockbrokers.co.uk/Pages/index.aspx
http://www.iii.co.uk/sharedealing ( they also own http://www.shareprice.co.uk/ which lets you do mobile trades ).