Well an update on the suppliers.
I tried going to both sites you mentioned but couldn't find anything that I needed from there, I didn't give them a call though because I have found one from a 540 that is not too far away from me in the uk with new filter ad is relatively cheap, so have gone for that. Those suppliers might of been able to supply what I needed but this came up last week and just thought it would be easier and cheaper.
Thanks for your help, moving on to project number two as soon as tuis arrives!!!
Speak soon mate,