B5 Auto Gearbox Oil Change

[DIOGENES]

Is there any reliable VW place where I can get my 60,000 mile 1.8 20V Passat 4 speed auto gearbox oil changed?
Never been changed yet. Local VW Dealer say 'it is a sealed for life' so they cannot do it!
Crazy, but maybe they are acting on instructions from on high?

I am looking for someone in South Manchester area, experienced in VW auto gearboxes.
So far it seems to work fine, but an oil change should be beneficial, provided the person doing the work
A Uses the correct fluid
B Does not introduce dirt etc.

Any recommendations?