Heathrow Hub, the independent proposal to expand Heathrow Airport via an Extended Northern Runway, has formally complained to the Competition and Markets Authority (CMA) about the behaviour of Heathrow Airport Ltd regarding airport expansion.

The complaint contends that Heathrow Airport has abused its dominant market position as the nation’s only hub airport by effectively and unfairly vetoing its Extended Runway plan.

The remedy sought by Heathrow Hub is that the CMA request Heathrow Airport provide a guarantee or, failing that, the CMA conducts a formal investigation into Heathrow’s behaviour, using its powers under the 1998 Competition Act.

Parliament is due to vote on Heathrow expansion in the summer and Heathrow Hub has already submitted a revised draft National Policy Statement to the Department for Transport so its scheme can be implemented.