Thomas Cook have lost their #2 spot in the largest ATOL providers. Jet2's growth particularly with the addition of BHX/STN has now launched them well ahead.
Rank Licence Holder ATOLNumber Passengers Licensed
1 TUI UK Ltd 2524 5386845
2 Jet2holidays Ltd 9618 2936420
3 Thomas Cook ' Ltd 1179 2389227
4 Expedia, Inc 5788 1416227
5 On The Beach Ltd 10017 1205480