Midlands aero-engine giant Rolls-Royce will highlight progress towards becoming a less cyclical company on Thursday when half-year figures are expected to reveal it followed last year's spectacular profits growth with another double-digit improvement.
The key to the steady growth has come from after-market and services, which offer better margins than those offered from new engine sales.
In addition there should be benefits from ongoing efficiency measures, with Barclays Stockbrokers fore-casting a half-year profits figure of £304 million, compared with £260 million a year earlier. In its last financial year Rolls posted a 49 per cent rise in profits as it showed why its shares were among the best performing in the stock market in 2005.
Meanwhile, the half-year earnings season starts in earnest this week with figures from the likes of BP, Centrica and Northern Rock.
However, the retirement date of BP chief executive Lord Browne could over-shadow another round of strong quarterly results from the oil sector.
Merrill Lynch oil analyst Mark Iannotti opened up the succession debate in a note last week, asking whether the mandatory retirement of Lord Browne at age 60 in February 2008 represented a medium term risk for shareholders.
Lord Browne became an executive director of BP in 1991 and took over from David Simon four years later. He must stand down in 2008 in accordance with BP's rules on mandatory retirement for executive directors.
Mr Iannotti said: "Our conclusion is quite simply that given the legislative developments in age discrimination, Browne's apparent desire to remain in active business life beyond 60 and his position as one of Europe's leading industrialists it is right to question on behalf of shareholders - before it is too late - BP's imposed retire-ment of an executive of Browne's calibre."
Lord Browne is expected to announce another record set of results tomorrow, with profits forecast to be between $5.8 billion (£3.14 billion) and $6.3 billion (£3.4 billion) in the second quarter.
However, such figures could sit awkwardly with recent headlines of refinery accidents, trading scandals and the group's retreat from refinery business in the UK. Last week it closed 12 oil wells on Alaska's North Slope as a precaution after whistleblowers alleged more than 50 were leaking.
Among those recent developments, BP is facing legal action over allegations that it cornered the propane market in the United States to drive up prices. It also said it was in talks with a number of potential buyers over the sale of its Coryton Refinery in Essex.
BP's falling production levels will also be on the agenda tomorrow, as it continues to feel the aftermath of last summer's brutal hurricane season.
Rising oil prices should still mean profits for the full year rise to more than £12 billion this year, up from just over £11 billion last time. BG Group is due to post figures today, while Royal Dutch Shell will deliver its second quarter update on Thursday.