Des Warren (10 October 1937 – 24 April 2004) was a British construction worker, trade union activist and – with Ricky Tomlinson – one of the 'Shrewsbury Two' imprisoned for 'conspiracy to intimidate' whilst picketing in Shrewsbury, Shropshire, during 1972. His autobiography, The Key To My Cell, put forward his version of events, and what he considered 'the real conspiracy' to intimidate the trade union movement.
His death in 2004 from Parkinson's Disease has been linked with the long-term effects of the treatment he received during his incarceration, in particular the 'liquid cosh' – a cocktail of tranquilisers administered to inmates.
On 4 July 2009, a march was organised in Shrewsbury, by the local trades council and the Justice for Pickets campaign, starting from the Abbey, and finishing at the Lord Hill's Column, where the demonstrators were addressed by several speakers.