For those interested in prices, this is what I bought/paid
L & M King size 36 Euro for 400 works out at £15 per 200
1 Ltr Bacardi 12 Euro = £10
1 Ltr Vodka (Smirnoff) 12 Euro = £10
They are only allowing 1 Ltr of spirits per passport on arrival and 600 cigaretts, didn't try to buy more than my allowance on departure (too scared of being pulled by UK customs

) but lots of people were.