Hello
No, unfortunately I'm not in UK, I'm in Lithuania. Here I've tried all vets and all they could say it's incurable and some didn't even know what felv was
I mean, how hard can it be to read up in internet, we all have google, right?
So I've been treating my kitties by myself, giving them human alfa-interferon (I've read an article that it might be an option if you can't afford the cat interferon), natural immunomodulators and even natural remedies to prevent cancer, and so far we were doing great (these cats were adopted, one sister wasn't in a very good condition - she used to be skinny and had no hair on her belly but it grew back!).
So I don't know what happened but they started having fever sometimes (their ears went warm) and after some time they started having it almost all day long and the little one started sneezing and stuff
I have no idea where they caught this infection and it could be because of felv. Even I sneezed a couple times and had a sore throat after being near my kitty but then I took garlic and I'm OK.
I know that vet would prescribe antibiotics but I'm already adding garlic to their food and it kills all viruses and bacteria. The true cause is really unknown. I'm confused if I should give them interferon.
(Besides, your cats are adorable, & looky at that playful cute rascal omg
Here are mine:
http://usera.ImageCave.com/siberyah/paskirties/katka_su_belka.jpg