Good questions,
David-A.
AIUI the VAT refund scheme wouldn't apply to most EEA (including UK) residents. Passports need to be shown, the minimum expenditure per transaction is £30 and as pointed out, service charges apply.
If these restrictions do apply to Dixons airport purchases, they reduce Dixons' usefulness to emergency only - a bit like running out of toy batteries at Saturday teatime.
Dixons' price policy at
http://www.dixonstravel.co.uk/index....xons.whatisdtf