Thank you Irving for your kind support. I've come back from a rather traumatic holiday and am not quite in the swing of SEO. I've read your answer and then read my question and realized that what I wrote and what I was puzzling over were not the same thing at all.
Sorry to use up your time by being completely misleading!
What I intended to ask was -
The W1 and WD are just the start of the different Google Places Pages Postcodes. One page, the W1 Postcode, is called 'Mobile Nail Technician' and one, with the WD Post Code, is called 'Spabycar'. They are both representing the same company.
I'd like if possible to keep the two addresses, particularly the 'W1' - 'Mobile Nail Technician' is top of Google Places for Westminster for 'Mobile beauty salon'. However the 'Mobile Nail Technician' name is historical and the company is now branding itself as 'Spabycar'.
I'd quite understand if you don't answer my question twice, and I'll just tick good answer in a day or two, but if your feeling generous would you answer the question I intended to ask? 
Thanks