Thanks all!
Service kit for the L is here:
http://www.dmgrs.co.uk/collections/s...00-25-45-zr-zs
At the moment we're using our own Fuel Filters (made in EU), aftermarket oil filters (Britpart, oddly enough, as a few years ago we cut one open and found it had the best internals and bypass valve construction!) and Genuine MG Rover air filter.
The pollen filter is here:
http://www.dmgrs.co.uk/collections/o...lter-jkr100020
We buy those direct from an MG parts dealer - they're the production line stock used on the new MG models which share the same filter.