In 2012, a further witness stated that Boxell attended an unofficial
youth club in the annexe of St Dunstan's Church in Cheam, known as "The Shed", which was previously unknown to the police. Following extensive inquiries the police found out that
paedophiles were operating in the area at the time Boxell disappeared. William Lambert, the St Dunstan's
graveyard digger who ran The Shed, was jailed for eleven years in 2011, when he was aged 75, after
sexually abusing four girls who attended the club. Between June and September 2012 the police excavated part of the St Dunstan's graveyard, digs which resumed in April 2013. In 2013, to coincide with what would have been Boxell's 40th birthday,
Crimewatch featured another appeal for information, working on the new theory that Boxell attended The Shed on the day he disappeared. In 2018, a
Scotland Yard spokesman confirmed that
cold case detectives had interviewed a potential witness and new information was being investigated that could lead to Boxell's remains being found. The following year, Boxell was featured in a missing person campaign promoted by Italian football club
AS Roma. ==Potential suspects==