Norman Wells wrote
Dave Liquorice wrote
Norman Wells wrote

You can't have a legally binding contract without
being certain it has been read. Which would normally
need a signature. And maybe even a witness.

Oh yes you can.

In English law a contract can be formed by just saying in "yes".

"Dave, are you free to do Everton on Saturday?"
"Yes"

Contract is formed...

Actually, that's not a contract at all. There's no offer.
There's no acceptance of any offer. And there's no
consideration.

And you need all of those.

There is no consideration in Dave's case either.

You can fall over now you have blown both feet right off.