The business later became WA Developments Limited, focusing on civil engineering contracts for the railway infrastructure sector.
The company later merged with Westbury Property Fund Limited, creating Stobart Group, of which Tinkler became Chief Executive.
In 2011, he was named the CBI North West Business Leader of the Year.
[3] Tinkler was replaced by Warwick Brady as CEO of Stobart Group on 1 July 2017 after the company's June AGM, and moved to head the newly formed Stobart Capital.
[4] Tinkler was fired from the board of Stobart Group in June 2018, accused of "breach of contract and breach of fiduciary duty", losing a subsequent High Court action in February 2019.