The weapon fits inside a shipping container and has been rapidly developed for Ukraine's needs against Russian attacks.
Donald Trump has said NATO allies should be spending 5% of national income on their armed forces - and the UK currently invests less than half of that.
Lewisham High Road was been locked down for several hours with armed police training guns on a flat near a branch of HSBC.
Arm has begun recruiting from its own customers and competing against them for deals as it pushes toward selling its own ...