This is account specific!
I logged into Quidco and saw a "Turn that frown upside down" banner offering a £10 cashback bonus on any tracked purchase of £10 or more + VAT & delivery, valid until 31 August 2016.
Go check your account!
Participation is by eligible account holders making a cashback qualifying purchase and opting in via email link or link on homepage, http://www.quidco.com/incentives/incentive-aug-ten-la.
A qualifying purchase requires the member to opt in and make a cashback earning purchase through the Quidco site before midnight 31 August 2016.
Quidco holds a list of account holders eligible for this promotion. Ineligible account holders will not receive communications regarding the promotion from Quidco and will not be entitled to receive the £10 bonus.