you may need to re-clear security in LGW if so any duty free bought at EDI needs to be in a checked bag.
Originally Posted by
polonius
Where did you get this idea? I shop at European duty free before boarding flights leaving Europe all the time.
Since the OP is not changing planes in the USA on his way to his final destination, then buying at duty free in EDI or LGW should be no problem.
However, if he buys stuff elsewhere in Scotland, and brings it with him to the airport, it's going to need to be checked.