Brulines has reported a 7.5% increase in operating profit to £2.21m for the six months to 26 September 2006.
Turnover at the beer-flow monitoring company increased 10.4% to £8.9m and earnings before interest, tax, depreciation and amoritisation increased 11.8% to £2.47m.
During the period, Brulines acquired petrol forecourt monitoring company Edensure for £220,000.
"We have made good progress in the strategic development of the Group in the first six months of this financial year," said Brulines chairman James Newman.
"Importantly, the defensive qualities of our business model are demonstrated by the fact that over 65% of Group revenue is now derived from recurring contracts with the associated increase in gross margin to 55%.
"The acquisition of Edensure is a natural extension of our core data management expertise and demonstrates the Group's ability to move quickly into new growth markets. I am confident that Brulines will deliver another robust performance in the second half of the current financial year."