[2] Williams Lea purchased the design and production agency Tag Worldwide in 2011, and adopted the company's name into its own brand.

Deutsche Post sold Williams Lea Tag to Advent International in 2017.

[3] Advent International completed its purchase of Williams Lea Tag from Deutsche Post DHL Group.

[4] Williams Lea was founded in 1820 by John Wertheimer, who opened a printing business in London.

[5] Williams Lea Tag has undergone rapid expansion in recent years due to the rise in corporate outsourcing of support functions.