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
Department for Infrastructure
Dudley Council
Fife Council
Flintshire County Council
Glasgow City Council
Hackney Council
Halton Borough Council
Hambleton District Council
Hertsmere Borough Council
Iceni (London)
Lichfield District Council
London Borough of Barnet
London Borough of Enfield
London Borough of Haringey
London Borough of Hillingdon
London Borough of Newham
London Borough of Redbridge
Maidstone Borough Council
Mendip District Council
Middlesbrough Council
Milton Keynes Council
Newcastle City Council
Norwich City Council
North Norfolk Council
Old Oak and Park Royal Development Corporation
Planning Inspectorate
Plymouth City Council
Preston City Council
Rugby Borough Council
Scottish Government
Sedgemoor District Council
South Downs National Park Authority
South Glouchestershire Council
Southend-on-Sea City Council
St Albans City and District Council
Stockport Metropolitan Borough Council
Trafford Metropolitan Borough Council
Thurrock Council
Turley (Manchester)
West Dunbartonshire Council
West Oxfordshire District Council
Wiltshire Council