Following leaked messages that were exchanged in 2021, Steve Brine, a senior Conservative MP, is facing an investigation over claims he lobbied the NHS on behalf of a recruitment firm that was paying him £1,600 per month.
Several sources have reported the story with some suggesting that the messages raise questions over whether he broke lobbying rules.
Brine has maintained that he was merely responding to a call from the government to help the NHS during the Covid pandemic.
Steve Brine has been accused of lobbying the NHS to hire Remedium Partners to supply anaesthetists.
Mr Brine was a paid adviser to Remedium during this time, and earned £1,600 per month for eight hours of work between July 2020 and December 2021.
Leaked messages from 2021 appear to show that he had been trying to contact health bosses on behalf of Remedium for several months during the pandemic.
He has been reported to the parliamentary standards commissioner by the Labour Party, and opposition parties are calling for him to step down as the health committee's chairman.
The commissioner will decide whether to investigate the matter further.
While Mr Brine has said he was responding to the government's call to help the NHS during a national crisis, others argue that the MPs are banned from lobbying on behalf of organisations they have been paid by for six months after receiving payment.