Hi Paul, Tony and Richard,
Thanks for your posts - always great to hear from other enthusiasts.
Bought one of the Unibond Aero 360 Pure moisture absorbers and so far seems to at least have an effect - currently available from Wilkos at half price. Will let you know if it has a long term effect.
when there is a dry day - when!!!! - I will check the rest of the car over, though with so many seals who knows what will be found. With the condensation on the inside of the window when its wound down is one I will give special attention to as of course with condensation on the inside in the first place you wouldn't notice it - well spotted that man!
Happy motoring to you all - haven't seen another 430 for over 3 months now - are we a dying breed?