Another tradesman in Grattan Street said he heard the motorbike pull up and heard the shot.
Jack was a tradesman and Alice ran a grocery and general store.
The work has taken two years and required 40 different tradesmen .
Trading standards chief say that rogue tradesmen are using bad winter weather to rip people off.
At the same time, 114 of the authority's tradesmen have been told they could be made redundant because of threatened cuts.
With the help of his buddies from work (all master tradesmen in their own right) he slowly modernised it and extended it.
It employs 250 hourly paid tradesmen and a number of sub-contractors.
They were all shopkeepers, tradesmen , workers, and such, not leading men of Boston.
The modernisation also meant that the abattoir could easily be used by individual butchers or groups of tradesmen .
He explained that the work was very specialised and although local tradesmen had been approached, none were considered capable.