Are you averse to using the internet?( http://www.amazon.co.uk/Vax-Filter-U91-MA-U90-MA-U89-MA/dp/B005OJU7SM )There are plenty of links for online suppliers if you do a google search, but you would have to trawl through them to find a local store. Having said that any branch of Currys should be able to order them through their Partsmaster arm.
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