Just a short notice:
1)The power steering wheel oil has to meet DEXRON III specifications.(any brand)
2)The anti freeze concentrate (as the original MGRover one gets rare) has the G12+ specification.
Both can be found at Halfords (Comma Brand)
1) Comma automatic transmission fluid AQ3 ,on backside of the bottle is noticed: Also suitable for power steering systems.
2) Comma XStream G40 Anti Freeze Concentrate or go to a local VW,Seat,Audi or Skoda dealer they know what G12+ means.