Following the raids, the terror alert level was raised by Britain's Joint Terrorist Analysis Centre on 10 August 2006 from 'severe' to 'critical', signalling an attack was believed to be imminent. Security at all British airports was raised to the highest level, with all property having to go into the aircraft's hold, except for essentials such as travel documents and wallets. Passengers travelling with small children were permitted to carry baby food but had to taste it in front of staff.