Seems like not a lot of people know about this, but Tesco have a policy where they accept *all* competitors "Conditional spend" vouchers.
What this means is that when you see vouchers in the press stating "£5 off £30 spend" at Morrisons/Lidl/Sainsburys, hell even the Farmfoods ones that you get through the door all the time. As long as you adhere to what it says on the voucher, Tesco will honour it. (check the dates, make sure you meet the spend criteria!)
Currently the Daily Express every day has such a coupon for LIDL. (£5 off a £30 spend)
Now, I've taken a lot of pain on this from the till operator who states "...but that is a Morrisons voucher?" to the Customer Service who point blank refuse to accept Tescos own policy! I've contacted the Customer Services hotline om 0800 505555 who tell you different stories, and I'll quote "We have a nationwide policy of accepting our competitor's vouchers in all stores. However the Store Manager of each store, at their discretion, can refuse to accept the vouchers."
I decided to take this to the top and e-mail a certain email@example.com
to challenge whether there is actually a policy as the above just sounds ... woolly/undecisive/ambiguous/crap/bull.
Anyways, today I received an unequivacable answer from the Top Brass at Tesco that
"all our stores should accept our competitors coupons, as long as our customer has met the qualifying spend, as displayed on the coupon. Although I appreciate that you have been given several different reasons explaining that stores should decline such coupons, I can assure you that this is certainly not the case"
GO FOR IT! IF YOU GET ANY NASH, DO AS I DID