The consortium secured a score of 83.9 in an Institute of Customer Service survey – a jump of 3 whole points from its efforts last year.
Scores of 80 or above are considered “world class” by the Institute.
Chief executive Gary Lewis revealed the accolade to an audience of 125 of the consortium’s 920 members at its business partner forum in London.
Lewis said the Group had achieved the score by “constantly obsessing” over how it could improve its relationships with members and had had the quality of its customer service measured across 35 separate metrics to give an overall score.
The consortium’s score of 83.9 was well above the average customer service mark in the UK of 77.8 and the tourism sector average of 80.2.
The Travel Network Group secured a score 80.9 last year and 76.0 in January 2015.
Lewis also revealed the firm’s Net Promoter Score (NPS) had gone up to 49% - more than double the average across the tourism industry (24.2%) and the UK as a whole which scored 13.9%.
Figures also showed that 83.9% of The Travel Network Group’s members would remain a customer compared with the 80.2% tourism sector average and 77.8% mean score for the UK on the whole.
Almost a quarter of the consortium’s 922 members responded to the survey.
“I can’t emphasise how important it is to obsess about [the score] because if you’re not obsessing about it then you’re not working on the right things in your business because it drives your behaviour on how you deliver your products and services,” Lewis said.