I am very grateful to Mark Allin
for letting me post details of his research into the availability of filters
for Routemasters.
All the filters used in Routemasters,
including all the engine types commonly in use are available from Filtration Control Limited who supply most of the major national bus companies.
But their website is out of date and
there is a new address Sketty Close, Brackmills, Industrial Estate, Northampton and a new phone
number 01604 707750
Details of the filters required and their part numbers
are available below. Email info@filtrationcontrol.com.
