Any particular reason why you want UK based? US hosting companies have always been cheaper IME. I got lifetime hosting for £250 which includes all the usual unlimited domains, subdomains etc, but they have very good prices on their regular package deals;
Haven't really had any problems with them, whenever something has happened they have always been very efficient at sorting it out and now that they have the live chat you can get things sorted out almost instantly. Only real problems I've had have been with ssl IP address when I changed over from the regular package to the lifetime hosting as it's a different server, but they sorted it within a day.