The family-owned business saw its turnover climb to £325m for the year to 31 March 2014, up from £256m the previous year.
Profit before tax was £5.2m, which is a new record high for the company. The previous year saw a loss of £2.6m.
As at April 2014, the secured forward order book was £443m, 63% higher than the £272m booked a year before. Secured orders plus work under negotiation totals £663m compared with £351 a year before – an 80% increase.
The end-of-year cash balance stood at £25.6m, slightly down on the £27.8m of sa year earlier but this is after Osborne invested £5.5m in buying 40,000sqft of office space in Cambridge.