SCOTTISH Enterprise chief executive Lena Wilson has been criticised after it emerged she received £68,000 for her part-time non-executive director role at Intertek.

According to the stock market listed company's annual report her fee has risen more than 11 per cent from the £61,000 she received for 2013.

The increase is because she was a member of London-based Intertek's audit and risk committee for the whole of 2014, compared to just a few months in the prior year.

The document shows Ms Wilson, who is paid a salary of £203,000 for leading Scotland's publicly funded economic development agency, got a basic fee of £58,000 for her non-executive role on the board of the FTSE materials and safety testing business.

The Intertek full board met seven times during the year while the annual report also notes a trip to visit Intertek facilities in the United Arab Emirates in October along with a strategy session held in the UK to review key areas of business.

Along with her basic fee Ms Wilson was paid an additional £10,000 for being a member of the audit and risk committee which met five times during the year.

Scottish Liberal Democrat leader Willie Rennie, who was critical of those who allowed Ms Wilson to take up the post, said: "Lena Wilson is already paid well by the taxpayer for a full time job as head of the enterprise agency.

"As head of the agency responsible for creating jobs and growth, people will wonder why she has the time to take up this additional work."

However Scottish Enterprise defended Ms Wilson stating she regularly "works well in excess of her contracted hours" at the economic development agency and has been able to gain further access to key decision makers and stakeholders through her role at Intertek.

It is understood she generally tries to fit in Scottish Enterprise business trips in London or other parts of England either side of attending Intertek board meetings.

Scottish Enterprise chairman Crawford Gillies said: "Since taking on this role in 2012 Lena has continued to deliver exceptional results with Scottish Enterprise's annual performance measures, reinforcing the fact that, with Lena at the helm, SE are on track to perform well again this year, attracting strong inward investment and jobs as well as supporting Scottish companies to generate turnover growth in excess of £1 billion."

Intertek says the typical time commitment of its non-executive directors is equivalent to around one day per month.

Full board meetings are normally organised on the same or adjacent days as individual committee meetings.

The company would not confirm whether Ms Wilson took part in the UAE visit or the strategy session as it said it did not disclose those details for individual directors.

However Ms Wilson's twitter account shows her tweeting about meeting Scottish Enterprise members in Dubai during October.

In its annual report Intertek said the UAE trip "provided an excellent opportunity for the board to meet with local management and to visit sites. The local management team presented on the drivers of the local operations and businesses and opportunities in the region.

"There was also time for informal interaction between the board and senior management after the meetings."

Ms Wilson joined Intertek in July 2012 on an initial three-year term and will soon have to decide whether to stand for a further term.

She has been chief executive of Scottish Enterprise since 2009 having previously been the agency's chief operating officer as well as head of Scottish Development International.

The fee Ms Wilson receives for her Intertek role is around 80 per cent higher than the average wage at Scottish Enterprise.

The agency said in its annual accounts for the 12 months to June 26, 2014, the median remuneration of its staff was £38,162.

Ms Wilson's fee from Intertek is also more than double the average Scottish wage of around £27,000.

The Intertek annual report also showed chief executive Wolfhart Hauser, who will become FirstGroup chairman later this year, was paid almost £2m.