Shares in oil services company Expro closed at a record 1259p after the company revealed it had received a takeover approach.

The firm, which employs 750 people in Aberdeen, told the stock exchange it had received "a very preliminary proposal which may or may not lead to an offer for the company".

The announcement was made in response to its rising share price and prompted a further surge with shares closing the day 36% up. Expro said a further statement will be made at the appropriate time.

The news comes amid wider industry merger and acquisition activity. In December, Aberdeen-based oil and gas drilling specialist Abbot Group agreed to a £906m offer by US private equity group First Reserve.

Expro International could be attractive to private equity firms or trade buyers, analysts reckon. There has even been speculation that national oil companies such as Saudi Arabia's Saudi Aramco could seek positions in the oil services sector.

Sustained increases in demand for Expro International's have helped the company record strong growth in profits in recent periods.

Expro's turnover increased 73% to £519m in 2006-07 driven by organic growth in the North Sea and acquisitions in the Norwegian sector.

Blue Oar Securities analyst Craig Howie yesterday recommended investors hold on to their Expro shares as trade buyers and private equity companies "have both demonstrated a recent willingness to make blockbuster offers to secure M&A targets".