Thanks John, might well be making a trip to Euro shortly then.
One thing I forgot to mention is that since the problem started some of
the dash warning lights, eg parking brake light and those near it, are
slightly lit all the time and flickering when driving, whereas they
should be off completely. Could a bad alternator cause that kind of
behaviour? Thinking about it, I think the lamps that are lit/flickering
are those which light when the engine if off, but the key is in
position 2, so that could be a clue?