RAF Fairford live updates: Streeting thanks farmer who alerted police but says she has ‘a partial picture’

<p>Member of the public who contacted police after seeing ‘group of hooded and masked men’ near RAF base says she thinks ‘someone dropped the ball’ over incident</p><p>In Fairford, police ‌have imposed a 400m ​cordon around the air base and ​evacuated about residents from 85 homes