I've been looking for a safety tin opener for a while but they have always been around the £10 mark. But I came across this one today which looks good at half the price of any others I've ever seen. Leaves both the can and lid without sharp edges. I needed one before christmas because I plan on using some of the cans as pencil pots for the kids new playhouse in the garden. Both the purple and orange at £5.09, lime green still £16.99.
Safety can opener in purple or orange £5.09 at amazon (free delivery with prime/£10 spend)