Online market research group YouGov Plc posted a 64 per cent rise in its first-half profit, spurred by growth in its US market due to an acquisition.
The company, which bought Harrison Group last year, said the acquisition helped in making the United States its largest market by revenue.
YouGov also said it would also buy Portland, Oregon-based Definitive Insights for around £600,000 to boost its business in the US corporate research market.
The company also said its UK, Middle Eastern and Scandinavian businesses have also gained market share and increased profits.
Adjusted pre-tax profit rose to £2.3m for the six months to 31 January from £1.4m last year.
Turnover rose 27 per cent to £27m.
Harrison contributed £3.9m to the total revenue.
YouGov shares have gained 15 per cent in the last three months.