The XL Leisure Group (XLLG) was a major tour operating company in the UK, consisting of charter and scheduled airlines, holiday companies and flight-only tour operators.

[1] It was the biggest collapse of a British tour operator since 1974 when Court Line became insolvent, affecting 50,000 travellers.

XLLG claimed it was the third largest tour operating company in the UK.

Prior to entering administration, it was the main shirt sponsor of West Ham United F.C.

[2][3] At the time the Group entered administration in September 2008, it was made up of the following companies and shareholdings: