Well I hope the paucity of equipment is a reporting error, not the worse case of poor VFM I've heard in ages.
And the head must have taken temporary leave of her senses. State schools are simply not allowed to make different provision in the core day based on willingness to pay.
If this is a sort of 'games club' with a subscription fee, it should have been offered to the school community explicitly as such. But if it's just nicer playground stuff for some, as part of regular playtime, that is wrong.
I'd have to check exact wording of the Act (orbwaitnfor prh47 who's bound to know it by heart) but state schools just aren't allowed to ask for anything other than voluntary contributions, are banned from treating children differently depending on whether parents have paid a voluntary contribution, and should cancel unaffordable activities rather than exclude on basis of disinclination to make a voluntary contribution.