The British parliament’s intelligence and security committee said in a report published on Tuesday that Russia had interfered in the 2014 Scottish independence referendum but it had not seen hard evidence of Russian meddling in the Brexit vote.

While the lawmakers noted allegations of meddling in Brexit, and some studies pointed to Russian attempts to influence the campaign, they said the British government and intelligence agencies had not sought out evidence of Russian interference.

“There needs to be some evidence that there’s an issue there – which there isn’t,” Shapps told Sky when asked if there should be a further investigation of possible Russian meddling in the European Union referendum.

“I don’t think it’s the case that the intelligence services took their eye off the ball,” Shapps told Sky.

The victory of opponents of EU membership in the 2016 referendum result sent shockwaves across the world as it signalled that one of the pillars of the West would split from the post-World Two attempts at European integration.

Russia has repeatedly denied meddling in the West, casting the United States and Britain as gripped by anti-Russian hysteria. The British government has repeatedly said there is no evidence of successful Russian interference in Brexit.

The so-called Russia Report by parliament’s intelligence committee called for British spies to produce an assessment of Russian interference in the EU referendum.

The report casts Russia as a hostile power which posed a significant threat to Britain and the West across a range of fronts, from espionage and cyber to election meddling and laundering dirty money.

“The UK welcomed Russian money, and few questions – if any – were asked about the provenance of this considerable wealth,” the report said. “The UK has been viewed as a particularly favourable destination for Russian oligarchs and their money.”

“It offered ideal mechanisms by which illicit finance could be recycled through what has been referred to as the London ‘laundromat’,” the report said.

Asked about dirty Russian money, Shapps said: “This is not the place to come and launder money.”