Sorry I've not been on for further updates,
I had a long chat with the vet when I collected Jess, he was great and went though EVERYTHING with me as I had a long list of questions, I managed to get Jess home okay in a taxi but he was getting stressed, we had an awful driver. When I got him home though he started weeing very soon literally going from one tray to the other, after a bit this settled down, Milo was keen to play but Jess wasn't at all.
Around 2 hours later Hubby came home and just started the weeing business again going from the downstairs tray to the upstaris tray and using his bed inbetween, so I called the vets and they said to pop him back (which in itself is not easy as we don't drive and the vet hospital is in the next town) but we did, they checked him over and gave him a Dexadreson or Dexafort (I can't remember which) injection and we've got to give him Nisamox for the next week.
Since that his been much better and weeing little and often, his not entertaining Milo at all though and keeps hissing at him, which worries me but if his feeling tender and a bit stressed then I guess we've got to expect this.
I was at home with them yesterday but I'm back at work today, hopefully they will be okay (my nerves are shot to pieces though)
Jess is on special food for the long term his slowly eating it but he isn't a fan of it really