The Supply Chain Sustainability School was founded by Skanska last summer.
It now boasts 2,400 members from 1,400 firms and is backed by Aggregate Industries, Balfour Beatty, Kier, Lend Lease, Morgan Sindall, Skanska, Sir Robert McAlpine, Wates and Willmott Dixon.
The first anniversary event takes place at the Museum of London on Wednesday June 19.
For more information and to book a place click here