Sally Rooney has vowed to use money from the BBC to fund the proscribed terror organisation Palestine Action.

The novelist said the police should investigate the corporations and the high-street stores that stock and promote her work if they believe she is committing an act of terrorism.

Membership and support of Palestine Action, including funding, can carry sentences of up to 14 years in prison after the group was banned by the Government in July.

The Normal People author made the comments in the Irish Times, noting that it would be illegal for her to publish them in a British newspaper.

She said she felt compelled to publicly express her support after “more than 500 peaceful protesters” were arrested for doing the same in a single day on Aug 9.

“If this makes me a ‘supporter of terror’ under UK law, so be it,” she wrote.

“My books, at least for now, are still published in Britain, and are widely available in bookshops and even supermarkets.

“In recent years the UK’s state broadcaster has also televised two fine adaptations of my novels, and therefore regularly pays me residual fees.

“I want to be clear that I intend to use these proceeds of my work, as well as my public platform generally, to go on supporting Palestine Action and direct action against genocide in whatever way I can.

“If the British state considers this ‘terrorism’, then perhaps it should investigate the shady organisations that continue to promote my work and fund my activities, such as WH Smith and the BBC.”

The BBC and WH Smith have been contacted for comment.