Labour leader Sir Keir Starmer is self-isolating after a member of his household displayed possible coronavirus symptoms.

Sir Keir will now be working from home and will not speak in today's House of Commons debate on the government's controversial internal market legislation, which could see ministers override the Brexit withdrawal deal.

He is understood to have not shown any Covid-19 symptoms himself.

A spokesperson for the Labour leader said: "This morning Keir Starmer was advised to self-isolate after a member of his household showed possible symptoms of the coronavirus.

"The member of his household has now had a test.

"In line with NHS guidelines, Keir will self-isolate while awaiting the results of the test and further advice from medical professionals."

Sir Keir Starmer apparently self isolating after member of household showing signs of Covid

Also, Sir Keir Starmer in Chesterfield 4 days ago, not wearing a mask, not socially distancing 👇 pic.twitter.com/Sk61hSUBJb

— Mrs Gee Ex Labour (@earthygirl011) September 14, 2020

Earlier on Monday morning, Sir Keir took part in a phone-in show on LBC Radio and appeared in the station's studio alongside host Nick Ferrari.

The Labour leader is understood to have been alerted to his need to self-isolate shortly after and he went straight home.

Once Sir Keir arrived home, the household member got an NHS coronavirus test.

Sir Keir's wife, Victoria, works for the NHS and, at the hospital where she works, the policy is that any NHS staff member or their family can go straight to the hospital to get a Covid-19 test.

Sir Keir's office has contacted LBC to inform them.

If the member of Sir Keir's household tests positive for coronavirus, he will have to self-isolate for 14 days.

He is due to make the keynote speech at Labour's online party conference next Tuesday, 22 September.

On the LBC Radio show, Sir Keir criticised the government's UK Internal Market Bill, which ministers have admitted could see the UK breach international law by overriding the Withdrawal Agreement with the EU.

"Here we are on the world stage for the first time in many years on our own and what's the first thing we do? We break a treaty," Sir Keir said.

"It's basic stuff - if you say to other nations we agree something and a few months later you say no we don't, the chances are they aren't going to trust you going forward."