Quick update. Now back from hols so picked up the 'max.
Service the usual 500 or so and a few extra pennies spent on replacing the power steering pump (not an unusual thing on an Aero - they should be consumables) and had dive planes fitted. Need to find somewhere to run up to speed to report back on their effectiveness.,.
All done by Taff at SGT, even the annoying rattle from the drivers door is eliminated. Class job.