PARIS (Reuters) - Airbus is facing a criminal investigation in Britain into potential violations of export control rules involving several of its UK entities, the aerospace group said on Tuesday.

The investigation emerged in footnotes to the company's half-yearly earnings, which said Airbus was fully cooperating with the probe by Britain's Revenue and Customs agency (HMRC).

"Airbus is working with all relevant authorities to ensure full remediation of all identified deficiencies," a spokesperson said in response to a Reuters query about the filing, adding that it was not expected to have a material financial impact.

The HMRC did not immediately respond to a request for comment.