A Downing Road spokesperson mentioned Theresa May had “misplaced confidence in his skill to serve within the position of defence secretary and as a member of her cupboard”.
“The prime minister’s determination has been knowledgeable by his conduct surrounding an investigation into the circumstances of the unauthorised disclosure of knowledge from a gathering of the National Security Council,” an announcement mentioned.
The dramatic announcement comes after an enormous leak inquiry launched by Mark Sedwill, the cupboard secretary, following last week’s leak of the apparent decision to present Huawei a job in constructing the UK’s 5G community.
The transfer has angered the US, which has banned Huawei from authorities networks and put strain on the UK to do the identical, over fears – denied by the corporate – that it’s a car for Chinese language authorities spies.
Mr Williamson was amongst 5 cupboard ministers reported to have raised considerations on the Nationwide Safety Council (NSC) assembly, which is supposed to be high secret.
He made no speedy assertion on his sacking, however is believed to disclaim his guilt and consider his firing was “politically motivated”.
The as soon as rising-star may but face a felony prosecution over his actions – which might nearly actually pressure him to resign his seat and set off a by-election. A breach of the Official Secrets Act can deliver a two-year jail sentence.
Solely final week, Mr Williamson issued an announcement denying that both he, or any member of his workforce, had been liable for any leak.
All ministers on the NSC, and their particular advisers, have been interrogated within the days since, with some ordered at hand in cell phones to be swept for contacts with The Day by day Telegraph, which obtained the leak.
The prime minister moved shortly to nominate Penny Mordaunt, the worldwide growth secretary – and a Portsmouth MP, with navy connections – as his alternative, the primary lady within the put up.
In a damning letter to Mr Williamson, she wrote that “no different credible model of occasions to clarify this leak has been recognized”.
Ms Might mentioned the leak inquiry had “been carried out pretty, with the total co-operation of different NSC attendees”.
“They’ve all answered questions, engaged correctly, supplied as a lot info as potential to help with the investigation, and inspired their employees to do the identical,” she wrote, including: “Your conduct has not been of the identical customary as others.”
Ms Might continued: “In our assembly this night, I put to you the newest info from the investigation, which supplies compelling proof suggesting your accountability for the unauthorised disclosure. No different credible model of occasions to clarify this leak has been recognized.
“It is important that I’ve full confidence within the members of my cupboard and of the Nationwide Safety Council. The gravity of this difficulty alone, and its ramifications for the operation of the NSC and the UK’s nationwide curiosity, warrants the intense steps we’ve taken, and an equally critical response.”
The No 10 assertion added that the prime minister now “considers the matter closed” – though MPs of all events are unlikely to let the controversy relaxation.
The NSC, which is chaired by Ms Might, is believed to have agreed to permit Huawei restricted entry to construct “noncore” infrastructure for 5G, similar to antennas.