The chair of Gleadless Valley Tenants and Residents Association has challenged Sheffield Council to prove that cladding installed on the six high rise tower blocks at Callow Mount is safe and different to the cladding installed at Grenfell Tower in London. Sally Dale, chair of Gleadless Valley TARA warned that residents are nervous and would like written evidence to prove their buildings are safe. Councillor Jayne Dunn has said checks are being carried out by South Yorkshire Fire and Rescue Service. Simon Thake reports for Sheffield Live!