Hi Barbara
Thanks very much for that. It must be my man. All the details etc. fit perfectly. As far as Charles Street is concerned, I don't have any more details, but they married in St Margarets, Westminster if there is one near there. Mind you that could be the bride's local church rather than the groom's. His father's name was Alexander Wilkie (I forgot to mention that before), but of course father may have stayed in Dundee and just his son travelled south.
If you can trace them I would be very grateful, but I am already in your debt for what you have managed to find. Thanks again.
Peter