The new portal, says Cook, is underpinned by Expedia’s “market-leading” systems and increases the number of hotels available to Cook customers to more than 100,000.

Cook says the agreement further supplements and complements its core holiday offering focused on its own-brand hotels and partner portfolio.

The deal will also boost bookings through its own website, which Cook says are up 37% in the UK in the year to date.

It comes after Cook last year agreed terms over a hotel sourcing partnership with Webjet Limited for its sun and beach hotel offering, boosting bedrock bookings 51% during the first half of 2018.

Peter Fankhauser, Thomas Cook chief executive, said: “Plugging in the Expedia Group technology will transform our city break and hotel-only business, offering more choice for our customers and unlocking efficiencies across our organisation.”