Between 1951 and 1970 Marine and Commercial continued to expand into commercial heating services within the City of London carrying out boiler and tank cleaning, whilst working on cleaning ships boiler in their docking period along with expanding its core business of cargo lashing, container lashing and maintenanceThe company also developed a strong working relationship supplying labour, riggers and shore gangs to the docks for company’s such as Blundell & Crompton, Port of London Authority

Marine and Commercial Services became a Limited company and under the guidance of Bert Robertson started to diversify the business to work on land based boilers.

Bert Robertson one of Mr. Robertson’s children took over the running of the business following his father’s death

Between 1939 and 1945 Marine and Commercial Services labour force including Mr. Robertson’s 13 children who all worked for the company fell under  reserved occupation, during WW2 they were used as “run crews” on ship whilst the actual crew were on leave.

Mr. Robertson set up family business of carrying out cargo lashing, supply  riggers, ship wrights, cleaning boilers and quarters and descaling of decking on ships in London Docklands – the company was then based in Fenchurch Street.