QUOTE(arealhighlander @ May 30 2008, 09:44 PM)

The limit to coming into the UK from a non EU country is 200 cigarettes per person. It is currently about £5 ($10) a pack of 20. It is not worth taking extra in and paying the duty, you would end up paying the same as the street price.
You can also bring in 1 litre of spirits plus 2 litres of still wine per person plus goods up to the value of £145 each. If you have over £145'sworth you will have to pay duty on ALL of the goods e.g. if your goods were £200 you pay duty on £200';sworth not 200-145=£55sworth.
Once you are through Immigration and Customs you do not have access to the duty free shops ibn the airport.
Thanks arealhighlander for giving an info.
