Instructions:Voucher code XXH6GP gives you £10 off a £50 spend and works in conjunction with code XXZK6M which gives you 1000 Tesco clubcard points (converted to £10 vouchers or £40 in deals).
This worked for me yesterday.
If XXH6GP doesn't work H6GPN7GJYPRP should give £10 off £50 aswell.
Vouchers taken from MSE, I hope they don't mind.
Unknown source and unknown expiry.