Concrete paving slabs (Bamford S33)

I've got 39 concrete slabs looking for a new home.
They're 45 x 45cm.
There's a couple of thinner ones amongst them, but otherwise they are seemingly all the same spec.
Some may need a bit of concrete chipping off the back.

-- MODERATORS REMINDER FOR MEMBERS --
Please remember to check your account for 'Chat' messages from other members and / or site volunteers. Please check the items offered are suitable before any potentially wasted journeys are undertaken. Remember EVERYTHING on Freegle must be for FREE - Freegle = FREE, Giving, Locally, Easily.