Labour will seek to haul a senior Tory minister before the Commons tomorrow for a grilling over the sleaze row engulfing the Government.
Frontbencher Jess Phillips confirmed Labour will demand an urgent question on Monday, which would summon the Government to face MPs questions over explosive allegations made by Dominic Cummings.
Mr Cummings, a former No10 aide, accused his old boss Boris Johnson of plotting an "unethical, foolish, possibly illegal" plan to get Tory donors to secretly fund a lavish refurbishment of his Downing Street flat.
The Government has previously said Mr Johnson paid for the revamp out of his own pocket.
In an incendiary blog post on Friday, Mr Cummings alsodenied being the source of damaging leaks after the PM's private texts to businessman Sir James Dyson and Saudi Crown Prince Mohammed bin Salman ended up in the hands of the media.
No10 insiders had briefed several newspapers that Mr Cummings was to blame, sparking an explosive response.
Mr Cummings also accused Mr Johnson of seeking to stop an inquiry into the leak of plans for a second coronavirus lockdown after he was warned it could implicate Henry Newman, a close friend of his fiancee Carrie Symonds.
"It is sad to see the PM and his office fall so far below the standards of competence and integrity the country deserves," he said.
The Prime Minister denied trying to block the leak inquiry on Friday and said public did not "give a monkey's" about such matters.
The maverick former aide, who left No10 in November, is reportedly prepared to release a dossier of secret information accusing Mr Johnson of failures in the Covid response.
Ms Phillips blasted the row between Mr Cummings and Mr Johnson as "scrapping between two very powerful men who seem more interested in who's lying about what and who's leaking what than the substantive of the issue".
She told Sky News' Ridge on Sunday: "[The issue] is whether contracts get given out by text messages, whether tax breaks get given out by text messages or whether the Prime Minister uses his pals to get money to have his flat done up.
"What we need is a proper independent inquiry where it isn't about two boys fighting and is about taxpayers in our country."
The Shadow Safeguarding Minister confirmed that Labour would ask Speaker Sir Lindsay Hoyle for an urgent question in parliament tomorrow.
Ms Phillips said businesses in her constituency had not been able to text the Prime Minister during the crisis amid a row over Mr Johnson's correspondence with Sir James Dyson.
Leaked texts showed that Sir James sought assurances over tax issues for his employers as part of efforts to build ventilators at the height of the pandemic.
"Businesses in my constituency should be able to lobby just as easily to get contracts to provide things that our country needs as Boris Johnson's pals," she said.
"I was given a generic email address for them to email which led to absolutely nothing. If only I could have been in a WhatsApp group sending GIFs to the prime minister."
In a statement after the leaks, Sir James said "neither Weybourne nor Dyson received any benefit from the project".
"When the Prime Minister rang me to ask Dyson to urgently build ventilators, of course I said yes. We were in the midst of a national emergency and I am hugely proud of Dyson's response - I would do the same again if asked," he added.
