Worldwide shipping firm UPS has announced strongly quarterly results thanks substantial growth in the international market, the firm claims.

The worldwide shipping company announced global revenues were 13 per cent on the same three month period in 2009.

Operating profits was up by 57 per cent in the second quarter of the year to $1.4 billion (£900 million).

UPS said that non-US domestic volume increased by nearly a quarter (24 per cent) during the period, driven by an acquisition in Turkey last year as well as strength in core European countries and Canada.

Scott Davis, chairman and chief executive officer of UPS said the firm had "fired on all cylinders" in the second quarter in the face of a difficult global economic environment

"Thanks to superb execution, our US domestic reorganisation is producing better than expected results," he commented.

"Substantial growth in our international segment continues to outpace the market. It's clear the strategic direction we've set for the company is proving successful."

The news builds on a strong first quarter performance in which the firm increased year-on-year revenue by seven per cent.