Sorry for late response gentlemen - work getting in the way of pleasure - but wanted to thank everyone for the great advice to this point. I live to the West of London so my plan is to get myself around to Bell and Coalville, SGT and Richard Thorn over the coming few weeks and get to do some serious research.
To this point my actual ride experience has beem limited to a friend's 4/4 four seater so will be interesting to try to compare. I am definitely prepared to wait for the right car and hear the good advice that whilst I need to put some miles and hours in, the car will probably in the end find me.
My 'ideal' car in my minds eye at least would be an Ivory coloured +8 with wire wheels and walnut trim but I realise life is always a compromise and hear the perspective that accessories can always be added later.
Again thanks for the advice so far - I have always used forums for my previous classic car ownership and find the advice of members invaluable - clearly this group is no different.