Join Date: Aug 2011
Location: Barcelona, London, on a plane
Programs: IB+ Gold, TK E+, Hyatt Globalist, Marriott LTP, IHG Diamond
Posts: 14,186
Quidco regularly offers 5, 10 and 20 quid cashback bonuses for making Booking.com reservations.
You should almost never use the Avios shopping portal. Collect cashback and then buy Avios later during a promo if necessary.