Theresa May has been ridiculed in the European Parliament after her Government took credit for two major EU regulations in the space of a week – without mentioning where the laws had come from.

The Prime Minister spent part of last week hailing the introduction of a ban on credit card charges, as well as mandatory fees for plastic bags in shops, as a win for consumers and the environment.

But despite Conservative-branded publicity being prepared for social media and a major set-piece speech about the environment off the back of the latter policy, the two laws were in fact EU regulations and directives.

The irony of the party delivering Brexit trumpeting the policies imposed by Brussels was not lost on Guy Verhofstadt, the European Parliament’s Brexit coordinator, who said there was clearly “widespread” confusion in Britain over the role of the EU.

“I see the confusion is a little bit widespread in Britain at the moment. Michael Gove for example has forgotten that the ban on plastic bags is an EU regulation,” he said, speaking on Tuesday morning in Strasbourg.

“The Prime Minister, Ms May, doesn’t know, apparently that the abolition of charges on credit cards is a consequence of a directive of the EU.”

Guy Verhofstadt, leader of the ALDE Liberal group at the European Parliament (EPA)

Mr Verhofstadt also made light of the “whole hilarious thing about passports” in Britain – which it turns out are not stipulated to be any particular colour by EU regulations, despite claims by Brexiteers and pledges to bring back blue covers after Britain leaves the bloc.

He also joked about Nigel Farage’s meeting with EU chief negotiator Michel Barnier, arguing that the former Ukip leader seemed “disorientated” after the event.

“I don’t know what he put in the coffee or the tea of Nigel Farage because he comes out of this meeting and he backs a second referendum!” he told MEPs

“I say what substance has been put in that tea, or that coffee. And then a poll comes out and five minutes later he’s against this second referendum.”

A spokesperson for the UK’s Department for Environment, Food and Rural Affairs disputed the claims about EU regulation being the source of the plastic bag charges.

“It is not true to claim that our plastic bag charge is a result of EU regulation. We set out our plans before the EU and we have gone further than EU regulations require,” she said.

Mr Farage signalled that he backed a second referendum shortly after the meeting at the European Commission in Brussels. He said his mind was changing and that another vote could settle the issue for a generation, with a larger number of people voting to Leave the second time.

Brexit: the deciders Show all 8 1 /8 Brexit: the deciders Brexit: the deciders European Union's chief Brexit negotiator, Michel Barnier Getty Brexit: the deciders French President Emmanuel Macron Getty Brexit: the deciders German Chancellor Angela Merkel Reuters Brexit: the deciders Commission President Jean-Claude Juncker EPA Brexit: the deciders The European Parliament's chief Brexit negotiator Guy Verhofstadt Getty Brexit: the deciders Britain's Prime Minister Theresa May Getty Images Brexit: the deciders Britain's Chancellor of the Exchequer, Philip Hammond PA Brexit: the deciders After the first and second appointed Brexit secretaries resigned (David Davis and Dominic Raab respectively), Stephen Barclay is currently heading up the position PA

Mr Verhofstadt also welcomed draft guidelines set to be published by the European Council that show the EU will tighten up its conditions on the UK for negotiations about the transition period.