Any question answered...

Oh fair enough.

It's the first time I've rented so never had to end a tenancy before.

Basically what date do I hand notice in and stop paying the rent if I have to give two months notice.

Assume i had handed in on the 28th of May, I guess I'd pay for July's rent and then be out by the 28th/29th of July?

No the clause makes no sense.