Instructions:From Quidco website...
Cashback will track in at 5% up be uplifted to 8% upon validation.
Use the codes below to get FREE delivery on all orders:
Offer valid until midnight on the 1st of Oct.
Please note that any unauthorised use of voucher codes may result in cashback being declined.
Marks and Spencers do not pay commission on any of their Money products or services (including insurance policies), or White goods.