POLITICS Top Tory says Britain must boost defence spending by 50% as rebel MP says 30 back-benchers could revolt By admin - November 27, 2017 0 413 Share on Facebook Tweet on Twitter MINISTERS should hike defence spending to three per cent of GDP to guarantee Britain's security needs, a top Tory has said. Julian Lewis, chair of the Commons' defence committee, said today that we must avoid a "hollowing out" of our armed forces. 1 of 5