The almighty row between Shabana Mahmood and one of her junior ministers is a clear illustration of the degeneracy within this Labour Government.

Not only is Britain having to suffer the consequences of a Left-wing coup within the party, and having a 'Messiah without a mandate' foisted upon it in the shape of Andy Burnham. The country is also lumbered with a dysfunctional, paralysed government while Labour figures jostle for attention from the man they expect will be prime minister three weeks from now.

It is truly unprecedented for a Cabinet minister to be publicly haranguing one of her junior ministers, let alone calling for him to be sacked. These things normally play out behind closed doors.

But Labour is in such a state of disarray Ms Mahmood has let it be known that her immigration minister Mike Tapp is persona non grata in his own office.

He blatantly attempted to curry favour with Mr Burnham by going behind Ms Mahmood's back and disparaging one of her policies – one she has made clear she believes will be key in preventing voters being lured away by parties offering an extreme anti-immigration stance.

Sir Keir Starmer refused his Home Secretary's request that he sack Mr Tapp. So she was forced to incapacitate the insolent pretender herself – blocking him from having official meetings or accessing documents without her permission. A few days before Labour's landmark immigration Bill is due to be published, the minister dealing with it has been made a pariah.

How is this going to help solve the myriad problems with Britain's border controls? Does Labour even care?

The answer is plainly 'no', because all that Labour MPs are interested in is ingratiating themselves with the black T-shirted one.

Amid the chaos, cabals of Labour MPs gather in every corridor in Westminster, plotting their coups and their own career trajectories.

Less than two years ago, Sir Keir pledged to 'restore service and respect to politics, end the era of noisy performance, tread more lightly on your lives and unite our country'. All of that has been long forgotten by this contemptible Government.

The one great, bright light in an otherwise dark week has been Kemi Badenoch.

The Tory leader's brilliant evisceration of Labour's front bench at Prime Minister's Questions on Wednesday demonstrated her growing power when it comes to exposing the fallacies and shortcomings at the heart of the Government.

She used her questions to humiliate Education Secretary Bridget Phillipson as a 'spiteful class warrior', going on to condemn Rachel Reeves' woeful performance as Chancellor and Ed Miliband's 'treachery' towards Sir Keir.

And it didn't end there, with Mrs Badenoch having a stand-up row with Ms Phillipson behind the Speaker's Chair.

With every week that passes it becomes clearer that Mrs Badenoch is the most skilful analyst of Government incompetence, and the most masterful interrogator of Labour MPs' burgeoning egos.

As Greater Manchester mayor, Mr Burnham has spent years being scrutinised once a month by local councillors on parochial matters. Is he really sure he is ready to face the relentless Mrs Badenoch across the Despatch Box?

Only time will tell – but there are sure to be spectacular fireworks along the way.