In September 2015, an investigation by Radio 4's File on Four and BBC News in Assam found dire living and working conditions in tea estates supplying Britain's biggest tea brands, including PG Tips, Tetleys, and Twinings.

The investigation found workers living in broken houses with poor sanitation, including no toilets, open and clogged drains, and no electricity, as well as malnutrition due to extremely low wages, child labour, and exposure to chemicals.

Estates investigated include the Doomur Dullung estate owned by Assam Company, supplying Twinings, Yorkshire Tea, Harrods and Fortnum and Mason, and McLeod Russel estates, which supply tea to companies that own PG Tips, Liptons, Tetley and Twinings.

All the estates had been certified by the Rainforest Alliance.

In response, Harrods stopped selling tea products from Doomur Dullung and noted that it hadn't bought any tea for the garden that year.

In January 2016, It was reported that the Rainforest Alliance had stripped its certification from the Assam Company. Twinings, Taylors of Harrogate and Fortnum & Mason also reported they had suspended business with the company.

Company comments can be found below.