This has just got a bit complicated. I went down Duke Street today.
Next door to 71 Duke Street (occupied by Duffield Stunt) is another firm of solicitors called Leonard Gray & Co. They occupy 3 buildings -each with their own front door - but none of which have a number on.
But the website for Leonard Gray & Co states their address to be 72-74 Duke Street.*
The buildings for 71-74 Duke Street are very old -pre Victorian I would say.
Next door to No 74 is a gap which separates No 74 from the headquarters of Essex County Council which were probably built in 20th century.
So No 75 may have been where this gap is...unless the numbering of premises in Duke Street is a bit eccentric and it is/was on t'other side of the street.
My brain was not sharp enough to cover this possibility today so next time I will look there.Watch this space
*Their website is at
http://www.leonardgray.co.ukIf you want a picture of their premises click on 'Our firm', scroll down to 'Contact us' and click on that.....and get your magnifying glass out