Bought an item from Maplins back in April but never used it.
I thought nothing ventured nothing gained so took it back, in original packaging & receipt, and asked if I could exchange it for something else.
On checking receipt got usual reply "Sorry sir you are outside the 28 days".
After explaining again, with my fingers crossed, that I didn't want a refund but an exchange & they said, wait for it, certainly sir.
So a big thank you & well done to Maplins.