The CAA, Britain's aviation regulator, will take on new responsibilities in January when the United Kingdom will no longer be a member of the European air safety regulator EASA.

"I can reassure you that we are extremely active in doing all that we can mitigate those risks," CAA chairman Stephen Hillier said during an online lecture. "We have recruited the additional people we need."

(Reporting by Sarah Young; editing by Michael Holden)