Back from the vets - all have a clean bill of health and he's happy they've put on weight/stayed same since yesterday.
The one with the swollen foot - who we call Thumper now - has been inspected and he says it's a birth deformity made worse by Mum biting it. Says to keep up with the antiseptic and salted baths.
Bless - they were quite the talk of the waiting room!!
Now fast asleep in their bed on their heatpad. What an exhausting day for them 
My kids are proud as punch with right puffed up chests at 'their' kittens.
Vet was great but did stress it's still a long way to go, particularly with Thumper.