Hi, All sorted! Took it to a local racecar preparation garage, couple of hours later they have refurbed the old one good as new! A big thanks to John and his team @ http://www.johndanbyracing.com TFL Steve
http://www.ebay.co.uk/itm/RC-4770-K-N-Universal-Chrome-Air-Filter-2-15-16-FLG-6-3-4-B-5-7-8-T-3-1-8-H-/291355699282?hash=item43d6272852 K&N do that, but alot more expensive that the US one