Thomas Cook has had complaints against price comparison ads run by EasyJet Holidays rejected by the Advertising Standards Authority.

The authority dismissed four challenges by Cook against its rival over press and website ads comparing package holiday prices last June.

The ASA backed two further complaints by a consumer concerning claims made by the budget airline’s holiday arm that it used 100,000 hotels and that holidays were fully protected.

“The ads must not appear again in their current form,” the ASA ruled. “We told EasyJet not to use the claim “Choice of 100,000 hotels” and to ensure future ads were specific about what level of insurance cover was included.”

Separate complaints against flight price adverts run by three online travel companies were upheld by the ASA.

Skyscanner, Cheapflights and Travel House UK were all rapped by the advertising watchdog.