I have found a company called Solo Sprayers in Essex. I purchased a 5 litre stainless steel sprayer with braided hose and upholstery gun for just £128.00 + VAT. Fantastic price! They also sold me a plastic one of the same spec for £38.00 + VAT. Their address is
www.solosprayers.co.uk and phone number is 01702 525740.
The chap who owns it is called Richard Vale, he was very helpful and even let me have them on invoce as i needed them in a hurry.
Justin