No 10 says it still has confidence in Martin Rolfe, who is scheduled to brief Heidi Alexander after flight cancellations pass 2,000Business live – latest updatesHow have you been affected by UK air traffic disruption?The head of the air traffic control provider Nats has been given a week to report back on the reasons for the technical failure that has disrupted thousands of flights since Tuesday.Downing Street said the government still had confidence in Nats chief executive Martin Rolfe, who w