Abuse not confined to Eurosceptics, but staff and pro-Remain politicians

EU officials worry that that are tainted by working in UK offices

Official revealed he fled one meeting to chants of 'leave, leave, leave'

British MEPs and officials are being subjected to intimidation and bullying in Brussels now the UK has decided to leave the European Union, MailOnline can reveal.

Last night, disgruntled Eurocrats were seen approaching British MEPs outside the parliament building, one passing a sarcastic note ‘congratulating’ them on Brexit. ‘Remain on your island! No pity!’ the note said.

Most of the aggression is directed towards Eurosceptic MEPs, but some has spilled over into outright anti-British sentiment.

Threatening atmosphere: Anti-British graffiti has appeared on walls near to the European Parliament as UK officials reveal they are being subjected harassment and intimidation in Brussels since Brexit

Warning: One official was handed this note, apparently congratulating him on Brexit - and then telling him to 'stay on your island'

Anger: The sign above British MEPs' postboxes has also been ripped down since last Friday

Earlier this week, the ‘United Kingdom’ sign that hangs above MEPs’ post boxes in the European Parliament was ripped down reportedly by a furious Eurocrat and had to be replaced.

MailOnline photographed anti-British graffiti near the European parliament, with the slogans, ‘f*** off UK’ and ‘Brexit’ scrawled alongside a crude depiction of the EU flag.

British officials reported being thrown out of meetings unrelated to Brexit. One was ejected from a session discussing development projects in Ethiopia because he worked for a Eurosceptic MEP.

Speaking warily in the corridors of the European parliament, the official, who did not want to be named, said: ‘I left before there was any real unpleasantness. You probably don’t want to go to any bars with an English accent for the foreseeable future.’

In another incident, European colleagues sought to intimidate British officials by chanting, ‘leave, leave, leave’.

Some party leaders have warned their MEPs to ‘keep their heads down’ after minor scuffles on the Eurostar and outside EU buildings ‘could have turned nasty’.

You probably don’t want to go to any bars with an English accent for the foreseeable future

One official, who was abused by a Eurocrat on the train from London to Brussels, told MailOnline that the man launched a foul-mouthed rant after overhearing him speaking in English.

‘He was flicking his fingers in our faces and shouting, “you’re a f***ing disgrace”,’ the official said.

Dan Hannan MEP, one of the Leave campaign’s most prominent figures, told MailOnline: ‘This has been going on in a more moderate form for years. It has always been acceptable to say things about the British that you could never say about the Spanish or Portuguese.

‘There is always a loud round of applause in the European parliament whenever people are disparaging Britain. Now we are just seeing it in an unmuzzled, intensified form.

‘It rather explains why people voted for Leave in the first place.’

Hatred: The anger hasn't been confined to Eurosceptic MEPs like Nigel Farage, who made a bad-tempered speech accusing his European counterparts of 'never having had a proper job' this week

Xenophobia: British officials claim some of the aggression has spilled over into outright anti-British sentiment

The Ukip leader, Nigel Farage, added: ‘There’s some pretty nasty stuff going on.

'The general narrative at home is about racist abuse on the streets of Britain, but some of the stuff we’re seeing from Brussels Eurocrats is horrific.’

According to officials working for British MEPs, the tone was set by the president of the European parliament, Martin Schulz, who sent a round-robin email to British workers in Brussels which some interpreted as promising jobs in return for ‘loyalty’.

In the email, which has been seen by MailOnline, Schulz wrote: ‘You have shown your loyalty to the European idea in your hard work for the success of the European Parliament.

‘In this spirit of reciprocal loyalty, I will work together with the Presidents of the European institutions to ensure that we can all continue to count on your outstanding talent.’

Staff working for the British also revealed they received an email from Martin Schulz, the Parliament president, which they claim left them feeling ‘intimidated’, believing that it implied that disloyalty would be punished

Pro-Leave MEP Dan Hannan told MailOnline: ‘There is always a loud round of applause in the European parliament whenever people are disparaging Britain. Now we are just seeing it in an intensified form'

Administrative staff working for UK MEPs, some of whom are not British, reported feeling ‘intimidated’ by the email, believing that it implied that disloyalty would be punished.

‘I am worried that I have been tainted by working in a British office,’ said one Polish member of EU staff. ‘We are being asked to prove our loyalty to the EU or our careers will not survive.’

We are seeing the beginning of a spiteful, dirty tricks campaign designed to make life difficult for the British in Brussels, simply because we voted to leave the EU. 'This is the first shot cross our bows, but I'm sure they have lots more in the locker

David Cambell Bannerman, a Conservative MEP, said: ‘These attacks are pretty despicable. European nationalism is a serious problem. It has got incredibly vindictive since we voted to leave.

‘The key point is that we are still fully paid-up members of the EU. We remain one of the largest net contributors and are still paying our way, so trying to exclude us from the workings of the EU is not acceptable.’

‘We are seeing the beginning of a spiteful, dirty tricks campaign designed to make life difficult for the British in Brussels, simply because we voted to leave the EU,’ said Roger Helmer, a Ukip MEP.

'This is the first shot cross our bows, but I'm sure they have lots more in the locker.'

British officials are concerned that the Europeans may try to sideline them from important businesses, exclude them from official business trips abroad, and even try to deny them their EU pensions in retaliation for the Brexit vote.

David Bannerman Campbell described the attacks were 'pretty despicable'

An EU parliament spokeswoman denied that any harassment was taking place. 'There have not been any reports of bullying of British staffers in the European Parliament.

'The UK sign on top of the pigeon holes for MEPs was missing at some point, but that has happened with other countries' signs as well in the past.

'The sign may have fallen off, but was quickly put back up.'

A spokesman for the EU President, Martin Schulz, added:'The President, nor indeed his office, has not received a single message of concern that the letter sent by the President to all UK staff was in any way intimidating.