Quartix more than doubled its new fleet tracking installations in the UK in the first half of 2011 compared with the same period last year.

It fitted more than 10,000 devices and is confident of registering further strong growth in both sales and installations in the second half, and expects sales growth of at least 60% over the year as a whole. Turnover is expected to reach £8million.

Quartix managing director Andy Walters said: “Response to our pay-as-you-go and 12-month rental contracts have been astonishing, boosting our fleet installations by 124% compared to the same period last year.

“We have installed more than 10,000 tracking systems in the UK in the first half, and are gaining at least 100 new fleet customers every month.

“We expect to increase our output again in the autumn, as we invest in further growth in France and in telematics for insurance applications.”

He added: “We will maintain our focus on organic growth, which has served us well over the first 10 years of our company’s existence.”

Quartix, with offices at Newtown, Cambridge and Southampton, designs every aspect of its key technology, from telematics hardware to database and user applications.

The company expects to launch a range of new software features focusing on driving behaviour and risk assessment in the early autumn, in addition to the release of its latest generation telematics system.