Well, I can get my unit rebuilt by a local Weymouth company - ABM starters in Weymouth (01305 812331) Quoted £50. They have the information for the Valeo 432836 in their system.
A company called RaysonsRadiators in Yeovil 01935 471474 are having the Valeo due in at their suppliers in around 5-6 weeks at £195.80 +vat.
Malpas Online are quoting £73.42 +delivery of £7.50 for their equivalent unit S.359661.
All the replacements are for LH units which, I am well informed, can be easily converted to RH operation.
I do not have the Valeo number for the RH version but was told that it was the same 432836 but noted as RH...
In my case I really want a replacement - JIC my current unit goes boobs up.
Hope this helps