Warwick University calls on BP to open up archive on 'renewables'

Pressure increases to honour promise to allow access to what is believed to be decades of research into 'green' technologies

The University of Warwick has joined calls for BP to honour a promise made by its chairman to open up a company archive containing valuable research on renewable energy.

The pressure comes a week after the oil company faced a shareholder revolt over executive pay and days before it expected to report a first-quarter loss of $140m (97m), compared with a $2.6bn profit in the same period of 2015.