Gatwick Airport Duty free no longer much of a saving and the majority (except cigarettes) available to all travellers.
Business takes me frequently through Gatwick and over the last few months I have seen a marked increase in the prices of Alcohol and cigarettes. Some months ago 2 litres of basic booze (Gordons. Grouse, Smirnoff, Bacardi etc) were 2 for £18 (up from £16). They are now at £22 with all other drink also up considerably, probably because the majority of them are available for all travellers to buy with only a small range of basics for people leaving the EU, whereas before it was the other way round. Cigarettes were around £60/600 and they are now around £90/600 (but not for travellers within the EU). It might have something to do with the CAA hiking Gatwick's charges up and they are trying to recoup some of this from the travelling public.