A supplier and designer of ventilation and air conditioning systems shook off concerns in the oil and gas industry to post another sturdy set of annual results.

Gillingham-based Wozair – which does its main business providing ventilation for the on and offshore oil, gas and nuclear industries – managed a 12% increase in turnover to £39.5 million at a time of falling prices in the sector.

“Despite the recent drop in the oil price we continue to experience strong market activity with major long-term projects in many locations around the world,” said company secretary Simon Collins in his report to Companies House.

The firm grew operating profit by 3% to just over £4 million last year, while pre-tax profits were up 2.7% to a similar figure.

“We are very conscious of the oil and gas market with operators shelving projects and reducing costs,” said Mr Collins. “Our response to the situation has been to drive efficiency improvements through the business with engineering, manufacturing and supply chain.”

Last month it also completed the purchase of two rival companies for an undisclosed sum.

It acquired temperature control firm Jet Environmental Systems and its sister company Jet AHU Ltd, which supplies and installs air handling units.

The firm, which celebrated its 20th year in business last year, also moved all its UK resources to a new headquarters in Gillingham Business Park.

It also has offices in Singapore, Houston, Dubai, Busan and Brisbane, employing 192 staff.