[3] During 2014 Addison Lee announced that founder John Griffin had stepped down earlier that year and is no longer involved with the company.

In April 2020, the Carlyle Group sold Addison Lee back to Liam Griffin, who returned as CEO to lead the company through the challenges of the COVID-19 pandemic.

Addison Lee has been recognised for its operational standards, achieving ISO 9002 and receiving accreditation from the Investors in People programme.

[7] Addison Lee incorporates advanced technology to manage its fleet and operations, using driver PDAs, GPS tracking and text messaging for efficiency.

[10] In April 2012, Addison Lee's chairman John Griffin instructed all of its drivers to begin using bus lanes, against the will of Transport for London.

[11] In the April 2012 edition of Addison Lee's corporate magazine Add Lib,[12] John Griffin used his editorial piece to voice his opinion that collisions with cyclists were unavoidable, and not the fault of his drivers.

[18] In September 2017, Addison Lee lost a tribunal case brought by Leigh Day, which sought to grant employees rights such as the minimum wage and holiday pay.