2015 – Isotank Depot Services receives accreditation to the E.F.T.C.O. food assessment programme, the first UK tanker cleaning company to earn this accreditation.
2015 – Isotank Depot Services and Isotank Transport Services receive S.Q.A.S. accreditation.
2012 – Isotank Group are improved security across all depots; starting with the installation of electric gates at all sites.
2011 – Planning permission granted for washbay to be built at the West Thurrock site.
2011 – Additional land purchased at the new Thurrock depot
2011 – Isotank West Thurrock depot relocated.
2011 – Isotank introduce customer access to online documentation.
2009 – Darlaston depot closed due to a downturn in regional demand.
2007 – Tankwash Scotland added to the Isotank Group network as a franchisee.
2006 – Purchase of tanker cleaning depots previously operated by Hoyer UK at Manchester, Southampton, and West Thurrock.
2006 – Entered into a joint venture with Dennis Dixon Limited to operate a tanker cleaning station in Middlesbrough.
2004 – Changed structure to a group - with key operating companies of Isotank Transport Services and Isotank Depot Services.
2002 – Reaches agreement with Wincanton to operate and develop tanker claning station in Darlaston.
2000 – Transport office in Felixstowe opened.
1999 – New tanker cleaning station built in Immingham.
1998 – Purchase of Hull based haulier.
1997 – Development of new cleaning station in Hull.
1994 – Relocated head office to Endeavour House, Redcar.
1990 – Haulage operation developed - operations in Teesside and Immingham.
1987 – Purchase of land in Immingham; new facility in Immingham - first tanker cleaning depot.
1986 – Isotank Services Ltd began haulage operations.
1985 – Additional land at Redcar purchased.
1983 – Isotank Services Ltd relocated to Redcar and new workshops and office facilities built.
1982 – Isotank begins trading as a separate company and undertaking work for third party customers.
1979 – Isotank Services Ltd Registered - based in Stokesley to undertake workshop work for Bailee Freight Services.