Keltbray continues to dominate the demolition sector with turnover of £87 million, although profits slid from £5.8 million to £200,000 in the year to October 2010.
“As the largest contractor in the demolition sector it is not possible to avoid the worst market conditions in a generation,” the company report said.
It also highlighted investment in new markets including rail, waste management, piling and asbestos.
Turnover was down by a fifth on the previous year, though the contractor is still £30m ahead of second place McGee.
The surprise in the sector came from DSM. While it held on to eighth place in the table, it was the most profitable firm, securing £3.6 million, more than any other company in the top 10.
Four demolition contractors saw turnover grow according to their latest results, including third place Erith.