Great savings and quick cashback
I use Zeek quite a bit to save when making purchases - over time this will save me a packet! Their website is pretty easy to navigate and it's simple to both buy and sell gift cards, (I've done both). The delivery of eGift cards is instant and physical gift cards are sent very quickly.
Cashback was confirmed and paid really quite quickly. A little tip - be careful to make sure that you're already logged into Zeek before you head there from Quidco as logging in often opens a new tab and if you complete your purchase in that tab then it won't be the one that you were directed to from Quidco...which will probably lead to the cashback not tracking.