The posters appear to be from the Conservative party
Images of key Tories drawn by an artist are being accompanied by wording which ranges from implying Theresa May’s party would engage in nuclear war to saying they are “unelectable”.
Hundreds of voters have been printing the posters off and sticking them up in official advertising spaces in bus stops across the country and on Tube trains in London.
Theresa May, Iain Duncan Smith and Jeremy Hunt all appear on the posters drawn by satirical artist Daren Cullen, best known for his “Pocket Money Loans” installation at Banksy’s Dismaland.
Mr Cullen is also crowdfunding to print 20,000 leaflets which he has asked people "living in or near a marginal seat" to deliver.
The Electoral Commission is now investigating the posters after Express.co.uk got in contact.
All of the adverts include a remodelled Tory Party logo with a tweaked tree with the Union flag to make it look like a nuclear cloud.
The posters appear to be official Tory campaign adverts and it is only on closer inspection of the critical words is it obvious they are a hoax and the logo has been altered.
Many of them have been placed in official spaces owned by advertising giant JCDecaux.
There are strict rules surrounding influential election material during a campaign, including the fact material must contain details about who is responsible for the production of the material, including a name and address of the promoter and printer, to ensure transparency.
This applies to parties and candidates as well as those not officially affiliated, Electoral Commission rules state.
These details do not appear on most of the “satirical” posters.
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One poster shows an enlarged nuclear mushroom cloud, complete with Union flag smoke, with the caption: “Our plan for Britain.”
An unflattering drawing of work and pensions secretary, Mr Duncan Smith, says: “My plan for the sick and disabled: Bury them – UNELECTABLE.”
This poster depicts Theresa May and Donald Trump holding hands
It is accompanied by a quote purporting to be from the top Tory, which adds: “My benefits sanctions have killed tens of thousands of the most vulnerable people in society.”
Mrs May has been drawn holding hands with Donald Trump, accompanied by: “Theresa May would follow Donald Trump to the end of the world.”
The poster urges the electorate to vote for a “nuclear suicide-pact”, for “selling the NHS”, “arms sales to tyrants” and for “starving children”.
One of the posters references the recent NHS hacking
In a poster featuring health secretary Jeremy Hunt, the poster says: “My plan for the NHS: Let it rot. Unelectable – I’m starving the NHS of cash so I can sell it to my mates for cheap.”
And another says: “We’re not shooting the sick and disabled in the street, but it gets the same results.”
The posters have been appearing in official JCDecaux ad space
Jeremy Hunt is also targeted in the psoters
Mr Cullen, said: “Some kind souls have been printing out my anti-Tory propaganda and clandestinely installing it on Tube trains around London.
“Although I cannot condone potentially breaking any laws, I can certainly enjoy looking at photos of such behaviour.”
He has urged people to send him photos after they have put the posters up.
An Electoral Commission spokeswoman, said: “It is an offence for printed election material not to include an imprint stating the name and address of the printer and the name and address of the promoter.
“The Electoral Commission is assessing this matter and we have contacted the individual responsible for designing the material.”
The Conservative Party is investigating the matter and is assessing what to do.
JCDecaux has not responded to requests for a comment.