Thank you for your reply.
Everything you've said is spot on. This is exactly what must have happened. I found a coin in the tab. There was a noise for the last few weeks when the machine was spinning. When I did my washing during spinning the coin must have punctured the hole. The puncture is from inside.
I decided not to repair but bought a new washing machine, as more than likely Candy would have refused to repair accidental damage.
I should have probably tried to claim on the home insurance policy as I think we have accidental damage, but it’s too late now.