The UK turned down an EU proposal for visa-free travel for performers and journalists in post-Brexit talks, the European Union's chief negotiator Michel Barnier said in a briefing published today.
His assertion, backed up by a copy of the proposal, deepens a row with Britain over the issue.
British pop stars, including Radiohead's frontman Thom Yorke, have denounced the British government for not securing visa-free rights.
But British Prime Minister Boris Johnson told MPs yesterday "that's not true... we wanted to have reciprocal rights for musicians to tour".
In his briefing to a group of reporters, including from Belgium's L'Echo newspaper, Mr Barnier emphasised that Britain was determined to do away with freedom of movement during negotiations.
"I very much regretted that the British didn't have more ambition for people's mobility," he said.
"From last March, we made fairly ambitious proposals in terms of mobility, including for specific categories such as journalists, performers, musicians and others. But you need to be two to make a deal," he remarked.
Under the EU-UK post-Brexit deal, only workers on a short list are permitted to visit the other's territory without a visa to carry out certain duties, subject to national laws in some EU countries.
They include businesspeople attending meetings or trade shows, transfers within a company and tourism personnel.
Musicians, actors and other performers, and journalists, are not on the list, meaning in some EU countries they would have to obtain visas, permits and/or customs clearance for any equipment.
As they would be carrying out paid work, in most cases the 90-day visa-free access for tourists and other short-stay visitors would not apply.
Mr Johnson appeared to confuse the two systems when he told MPs: "What we have is the right for UK musicians to go to play in other European countries, in EU countries, for 90 out of 180 days."
One Direction's Louis Tomlinson and former Boyzone singer Ronan Keating have urged fans to support a campaign calling for a "free cultural work permit", with an online petition collecting almost 250,000 signatures.