Previous hosts have included:
Aberdeenshire Council
Basingstoke and Deane Borough
Birmingham City Council
Bristol City Council
Brighton and Hove City Council
Carlisle City Council
Derry City and Strabane
Dudley Council
Fife Council
Flintshire County Council
Glasgow City Council
Hambleton District Council
Hertsmere Borough Council
Iceni (London)
London Borough of Barnet
London Borough of Enfield
London Borough of Haringey
London Borough of Newham
London Borough of Redbridge
Mendip District Council
Middlesbrough Council
Milton Keynes Council
Norwich City Council
Preston City Council
Scottish Government
Sedgemoor District Council
South Downs National Park Authority
St Albans City and District Council
Turley (Manchester)
West Dunbartonshire Council