Theresa May met King Salman, left, in December. Home Office sources insisted that Saudi Arabia was not the focus of a controversial report into terror funding

Theresa May has been accused of burying a report into the funding of Islamist extremism in the UK for fear it will embarrass Saudi Arabia.

It has emerged that the report, which was originally commissioned by David Cameron in January last year and had been due to be completed by last Easter, has been in Mrs May’s possession for at least six months.

She said yesterday in response to a parliamentary question that “ministers are considering advice on what is able to be published and will report to parliament with an update in due course”.

Home Office sources said the report does include references to Saudi Arabia but insisted that the Gulf state was not a major focus of it.

It was undertaken as part