It does take longer for some to track than others. Also make sure that you clear cookies before you log in to Quidco, as if you've visited the site before, it won't register as being referred by Quidco, and you don't get the cashback.
I have Firefox as my browser for Quidco as it handles cookies separately from IE
Holly, July04 & Charlotte, December07
https://labs.yougov.co.uk/refer/bxWBIKTzEWjL2ULh51DxTA/ - YouGov referral link
http://www.biddyclips.com - Handmade hairclips & accessories