Rolls-Royce has netted an order for its Trent XWB engines worth $1.1bn (£699m) at list prices from leasing company Air Lease Corporation. The engines will be used to power 25 of Air Lease’s Airbus aircraft. Additionally, Air Lease has an option for an extra five aircraft. The Trent XWB engine – specially designed for the Airbus A350 – is the fastest selling Trent engine ever, Rolls-Royce said yesterday, with more than 1,200 already sold. Shares in the FTSE 100 power systems company closed up 0.05 per cent yesterday at 971.5p.