The senior EU Commissioner was heavily criticised and put alongside other key Brussels figures for their attempts to stop Brexit from being a success.
Pierre Moscovici, European Commissioner for Economic and Financial Affairs, warned Britain faces a bleak future outside the European Union as he tore into Brexit voters.
Mr Moscovici claimed, despite respecting the will of the British people, that he believes the European markets will continue to grow while Britain’s slumps.
Speaking to BBC Radio 4’s The World This Weekend, the EU Commissioner said: “I respect the will of the British voters, the Brexit will happen but I think economically… I’m convinced being a European and being a member of the Eurozone is a positive asset.
“But, of course, I wish to my British friends that growth in the UK is as strong as can be.”
Ukip leadership candidate Jane Collins reacted furiously at the comments, accusing Mr Moscovici of being part of an EU-wide effort to stop Brexit.
She said: “Mr Moscovici talks the talk on Brexit, but how about walking the walk?
“The European Commission has thrown everything possible in the way of Britain getting a good deal and progressing on from the opening round of talks.
“So if he really respected the will of the British people he’d be encouraging his colleagues in the Commission and European Parliament to progress with these talks rather than continue this narrative that the UK must be punished.”
The EU’s chief Brexit negotiator Michel Barnier was branded “patronising” and “bullying” after launching a similar outburst as Mr Msocovici.
Mr Barnier faced the barrage of angry rebuttals after he claimed his job role meant he had to “teach the British people and others what leaving the EU means”, in what some believe was an anti-Brexit threat.
In response, Tory MEP David Campbell-Bannerman compared his remarks to those made by East German politicians and accused him of trying to drive a wedge between the UK and EU.
He blast: “Barnier’s threat to ‘educate’ the British on the danger of leaving the single market smacks of the DDR [East Germany] than the EU.
“Why not build a wall too?”
Andrew Morrison, the Tory MP for South West Wiltshire, added: “If Michel Barnier wants to ‘educate’ the UK public on the risks of quitting the single market, will he be ‘educating the EU on the risks of no UK trade deal?”