Why don't they mint some more then. it has to be cheaper in the long run and more convenient in my opinion. I am almost certain that they were around in England a few years back, similar to the £2 coin but a bit bigger.
There has never been a £5 coin in general circulation. From time to time the Royal Mint issues commemorative coins, and although these have 'legal tender' status, they are not intended for general circulation, so most banks and many retailers will not accept them.
The £5 coimmemorative coins are not legal tender in Scotland or Northern Ireland.
This is 'legal tender' thing is often misunderstood. People believe that a retailer is bound by law to accept any note or coin which has legal tender status, but that's not the case. When you offer coins or notes for something in a shop you are technically making an offer to the shopkeeper to enter into a contract, but he or she is not bound to accept - your money may be refused quite legally.
If you offer legal tender banknotes or coins in settlement of a debt however, the other party is legally bound to accept. If you make such an offer and it is refused, the other party cannot subsequently take legal action for non-payment.
Will the new 'Plastic' notes be suitable for screwing up in your pocket. The reason paper notes don't last very long these days is because men (mostly) just screw them up in their trouser pockets. No-one especially the younger generation, don't use a wallet anymore
"is because men (mostly) just screw them up in their trouser pockets."
For that reason we should have had the £5 coin over a decade ago.
'Legal tender'. Don't forget that bank notes have "I promise to pay the bearer on demand the sum of ..." printed on them. So even thought they have dropped out of general circulation, the Bank of England (and I also assume the Bank of Scotland), must exchange it for a general circulation one.