We've lost a voucher. Our fault, but I expect that we're not too unusual. (Look at the Mail money page) Rang about having it stopped and replaced. Told that on proof of purchase, they'll stop it - OK so far. Replacement? Highly unlikely, but we can argue with the store! It seems each does what it wants. No set policy? So, needing a £100 voucher, we've bought a blanket one at the Post Office. You can use them anywhere (JL too) and online. At point of purchase we were advised to keep the receipt in case of loss. Much more in line with 21st century busy lives! And kinder.........