Intertek Group plc (LON: ITRK), John Menzies plc (LON: MNZS) and Lamprell Plc (LON: LAM) suffer weakness. The FTSE 100 slipped back from its recent highs by a few points in early trading.

From an operating perspective, Lamprell is focussing on its core competencies and on maintaining high standards of safety and quality.

Oil rig maker Lamprell said it is on track to restructure its debt and agree revised covenants by the end of June, as the company recovers from a 2012 loss.

Lamprell is pleased to announce, also effective as from 27 May 2013, the appointment of Michael Press, John Malcolm and Ellis Armstrong as non-executive directors of the Company.

Lamprell has a 1-year low of GBX 60.00 and a 1-year high of GBX 183.085. The stock's 50-day moving average is currently GBX 102.3.

LONDON May 17 (Reuters) - Lamprell PLC : * Performance in the year to date has been in line with management expectations * Debt discussions are now in an advanced stage and the company remains on.

Lamprell has a one year low of GBX 60.00 and a one year high of GBX 183.085. The stock's 50-day moving average is currently GBX 102.3.

In 2006 he was appointed as an Executive Director of Gulf Keystone Petroleum, followed by Sterling Energy plc in 2008, where he was Finance Director.

The independent oil and gas company has announced the appointment of Jonathan Cooper as chief financial officer. A chartered accountant by training, he replaces Iain Lanaghan, who is leaving at the end of June.

In 2006 he was appointed as an executive director of Gulf Keystone Petroleum, followed by Sterling Energy plc in 2008, where he was finance director.