Jacob Rees-Mogg has slammed David Lammy after the Labour MP compared him and Boris Johnson to Nazis today.

The second referendum campaigner likened the politicians to Hitler in a damning outburst on the Andrew Marr Show on Sunday.

And his rant sparked fury among Conservatives who claim the MP for Tottenham has 'lost it' with the comparisons to 'white supremacists'.

Now, Rees-Mogg has taken to Twitter to criticise the Labour MP: 'I feel sorry for Mr Lammy, comparing a Parliamentary ginger group with an organisation and creed that killed six million Jewish people makes him look foolish and his comments unbalanced.

'It damages his reputation.'

Labour MP David Lammy has compared Jacob-Rees Mogg and Boris Johnson to Nazis in a rant on the Andrew Marr show

Rees-Mogg has slammed the Labour MP's comments, taking to Twitter to comment: 'It damages his reputation'

Mr Lammy was asked about whether comments he made at a rally last month where he compared the European Research Group (ERG) to the Nazi Party and South African racists were unacceptable.

But Mr Lammy said those comparisons were 'not strong enough', and referred to Rees-Mogg retweeting the far-right Alternative for Germany and Boris Johnson meeting Donald Trump's adviser Steve Bannon.

He replied: 'In 1938 there were allies who hatched a plan for Hitler to annex part of Czechoslovakia, and Churchill said no, and he stood alone.

'We must not appease. We're in a situation now, and let me just be clear, I'm an ethnic minority.

'We have, in the ERG, in Jacob Rees-Mogg, someone who is happy to put on to his web pages the horrible, racist AfD party, a party that's Islamophobic and on the far right.'

Mr Lammy added: 'They're happy to use the phrase 'grand wizard'. KKK is what it evokes to me when I think of that phrase and the Deep South.

Asked by Marr if he regrets the comments, Mr Lammy told the BBC: 'I would say that wasn't strong enough'

'I'm sorry, but very, very seriously, of course we should not appease that, of course we should not appease that.'

The AfD was founded in 2013 as a Eurosceptic party in Germany, and has since campaigned for tougher immigration laws. Mr Rees-Mogg has previously denied supporting the party.

Marr refuted that it was 'dangerous' to accuse the politicians of being similar to Nazi ideology.

Asked if he regretted the comments, Mr Lammy told the BBC: 'I'm not backing off on this - never will I back off on this on behalf of my constituents.

'The BBC should not allow this extreme hard-right fascism to flourish.'

When Andrew Marr pointed out the Brexiteers were elected as politicians, Mr Lammy said: 'I don't care how elected they were, so were the far right in Germany.

'British soldiers in this country died fighting this thuggery and extremism and here we are in 2019 with people bringing it into the mainstream for their political advantage.'

The second referendum campaigner likened the Conservatives figures to Hitler in the damning outburst on the BBC programme on Sunday

Mr Lammy added: 'What kind of country are we going to be like if these people are running it?'

When it was put to Mr Lammy that he was saying Mr Rees-Mogg and Boris Johnson are equivalent to Nazis, Mr Lammy said: 'Ask Boris Johnson why he's hanging out with Steve Bannon.'

The furious outburst by Mr Lammy was slammed by Tory MPs who said the Labour veteran's claims were 'bats**t and that they had lost respect for him.

Conservative MP Conor Burns said: 'I used to have regard for David Lammy. But this is bats**t. Comparing ERG to Hitler is quite something. Fully lost it.'

Mims Davies, the Minister for Civil Society, added: 'Sowing further division costs us greatly - coming together must take precedence.'

Mr Lammy later Tweeted: 'I will never back down from calling out links to the extreme right. We must not appease or concede ground, we must call it out for what it is.'

The Labour politician has been a staunch campaigner for a second referendum to remain in the EU.