The Chelmsford-based firm runs a fleet of 49 mixers operating across East Anglia and the south east from three offices in London and plants in Ipswich and Thurrock.

PricewaterhouseCoopers joint administrators David Baxendale and Zelf Hussain were called in to take control of the firm just before Christmas.

So far there have been no major redundancies among the 70 staff as PwC talks to several potential buyers.

A source told the Enquirer: “We are still trading and continue to supply concrete around London.

“There are several companies said to be interested in buying the business and we are all very hopeful that staff jobs will be saved.”

The last up-to-date accounts showed the firm turned over £23m, booking a pre-tax profit just shy of £1m. But the firm also had net book debts of £2.8m in 2012.

The business is not connected with CPI EuroMix, which specialises in supplying mortars nationwide.