It's been a good few years since I went through Luton but I used to do it 4-5 times a year back in the day. Small shop that stocked the usual suspects in relation to blends but cannot remember any overly interesting single malts. Always seemed to have loads of double bottle offers. In relation to malts all I can remember is mainly Glenfiddich and Glenmorangie being prime sellers but things may have changed cannot tell for sure. Sorry not much help really.