Ok I did a quick search on Ebay-UK and found this:
http://cgi.ebay.co.uk/BADGER-155-Anthem-USE-BUY-IT-NOW-GET-FREE-SHIPPING_W0QQitemZ5998274674QQcategoryZ2594QQrdZ1QQcmdZViewItem
Also I found an Iwata HP-CR which I also own and is my ULTIMATE brush... very fine detail, good at larger coverage, I use my Badger 175 for anything large but the CR does EVERYTHING else... (your brush you listed from ebay would do the same as my 175) here it is:
http://cgi.ebay.co.uk/IWATA-HP-CR-AIRBRUSH-BRAND-NEW-IN-BOX_W0QQitemZ8217610008QQcategoryZ11785QQrdZ1QQcmdZViewItem
Either one would do great, the HP-CR in MY opinion is a little more adapted to small detail but the 155 is very close behind...
I hope you find what you want!!!!
---edit---
I saw on the Iwata the seller posted free hose or free shipping, I believe the free hose would be more economical as it is $12 here in the US and the 3 pounds to ship would be the lesser of the two prices. The hose for your other airbrush would probably not fit the Iwata. Caution though, find out how available Iwata parts are in the UK (although I saw several of them on ebay.uk so they must be somewhat popular) The reason I say this is Hannants has all the parts for the 155 you could ask for.... you wouldn't want to have to wait for 2 weeks for a needle to arrive from the US for the Iwata...