It comes ahead of a likely four-week delay to the UK’s 21 June Covid unlock, which is expected to be announced by prime minister Boris Johnson on Monday afternoon (14 June) and could further delay the resumption of international leisure travel.

Tui also extended its summer holiday cancellations into July at the weekend.

Popular experiences Tui will offer include Warner Bros’ Harry Potter Studios, Westminster Abbey and flights on the London Eye. Outside of London, TUi said there was demand to visit Edinburgh Castle and Belfast’s Titanic Experience.

Katie McAlister, Tui UK chief marketing officer, said: "We’re thrilled to grow our domestic experiences programme further.

"Through our website, customers can easily search and instantly book some of the UK’s most popular and sought-after experiences, whether it be for a staycation, day trip, or perhaps a local activity to extend that holiday feeling after returning home from abroad."

Customers can book via Tui website, its Musement brand or retail stores, and will be able to cancel their bookings for most experiences for free.