MATT McCue's devotion to the community earned him a People of Wiltshire Good Neighbour Award.
His surveillance group Street Watch successfully cracked down on kerb crawlers and prostitutes in the Broad Street area.
He was honoured with the award in July last year.
The information collated by Street Watch was used in the successful prosecution of many prostitutes in the town centre.
Borough solicitor Francis Maples has worked with Mr McCue for the past three years.
He said: "Matt has always been a key witness and extremely reliable witness.
"He was a man who believed in actions, not just words and took considerable risks in the remarkably diligent Street Watch patrols night after night.
"He will be greatly missed and is truly irreplaceable."
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