Instructions:Just posted this on MSE - sorry if I go the category wrong - it's a lastminute.com offer, but via Egg.com
T & Cs below - looks like potentially a fantastic deal if you package some flights and hotel accommodation together. To be eligible you must pay using using egg card via the link in the travel & priviledges section of the egg.com website.
Cash back Restrictions
Purchases made on the website http://egg.lastminute.com will be eligible for instant cash back at the quoted rate on the total order value only if you use your Egg credit card to make a purchase of the following products:
2. Flights + Hotels, including City Breaks and Eurostar Breaks (when you create your own holiday, for example when you package together a flight and hotel under a single price)
3. Theatre Breaks
4. Sports Breaks
5. Spa Breaks
6. Theatre tickets
7. Sports tickets
Purchases made in the following categories will not be eligible for cash back rewards regardless of whether or not you use your Egg credit card:
1. Flights only.
2. Pre-packaged holidays that are supplied through a tour operator and that you do not package yourself.
3. Any other travel or leisure product not listed above.
No instant cash back will be given for bookings made on the telephone. No instant cash back will be given on purchases made on the original www.lastminute.com website even with your Egg credit card. If you are in doubt, the website is http://egg.lastminute.com and is co-branded green and pink.