- Adur and Worthing Councils
- Ashford Borough Council
- Bath & North East Somerset Council
- Bedford Borough Council
- Birmingham City Council
- Borough of Poole
- Bournemouth Borough Council
- Bradford Metropolitan District Council
- Brighton & Hove City Council
- Bristol City Council
- Buckinghamshire County Council
- Calderdale Council
- Cambridgeshire County Council
- Car Parking Partnership
- Cardiff Council
- Cheltenham Borough Council
- Chichester District Council
- City and County of Swansea
- City of Edinburgh Council
- City of London
- City of Westminster
- City of York Council
- Cornwall Council
- Cotswold District Council
- Darlington Borough Council
- Derbyshire County Council
- Dover District Council
- Durham County Council
- Ealing
- East Herts Council
- Elmbridge Borough Council
- Gateshead Council
- Glasgow City Council
- Great Yarmouth Borough Council
- Harrogate Borough Council
- Hartlepool Borough Council
- Hertfordshire County Council
- Horsham District Council
- Ipswich Borough Council
- Kirklees Council
- Leeds City Council
- Leicester City Council
- Leicestershire County Council
- Lincolnshire County Council
- Liverpool City Council
- London Borough of Barking and Dagenham
- London Borough of Barnet
- London Borough of Bexley
- London Borough of Brent
- London Borough of Bromley
- London Borough of Camden
- London Borough of Croydon
- London Borough of Enfield
- London Borough of Hackney
- London Borough of Hammersmith and Fulham
- London Borough of Haringey
- London Borough of Harrow
- London Borough of Havering
- London Borough of Hillingdon
- London Borough of Hounslow
- London Borough of Islington
- London Borough of Lambeth
- London Borough of Lewisham
- London Borough of Merton
- London Borough of Newham
- London Borough of Redbridge
- London Borough of Richmond upon Thames
- London Borough of Southwark
- London Borough of Sutton
- London Borough of Waltham Forest
- London Borough of Wandsworth
- Luton Borough Council
- Maidstone Borough Council
- Manchester City Council
- Medway Council
- MET Parking Services
- Milton Keynes Council
- Mole Valley District Council
- Neath Port Talbot County Borough Council
- Newcastle City Council
- North Devon Council
- North Tyneside Council
- Northamptonshire County Council
- Northumberland County Council
- Nottingham City Council
- Oldham Metropolitan Borough Council
- Oxfordshire County Council
- Parking Control Management
- Peterborough City Council
- Plymouth City Council
- Reading Borough Council
- Redcar and Cleveland Borough Council
- Reigate and Banstead Borough Council
- Rochford District Council
- Rutland County Council
- Salford City Council
- Sandwell Council
- Scarborough Borough Council
- Sevenoaks Disctrict Council
- Sheffield City Council
- Somerset County Council
- South Gloucestershire Council
- South Hams District Council
- Southampton City Council
- Southend on Sea Borough Council
- St Albans City and District Council
- Stevenage Borough Council
- Stockton-on-Tees Borough Council
- Stoke-on-Trent City Council
- Stratford-on-Avon District Council
- Sunderland City Council
- Swale Borough Council
- Swindon Borough Council
- Test Valley Borough Council
- Thanet District Council
- The Royal Borough of Kensington and Chelsea
- The Royal Borough of Windsor & Maidenhead
- Tonbridge & Malling Borough Council
- Torridge District Council
- Tower Hamlets Council
- Town and City Parking
- Trafford Council
- Transport for London – Congestion Charging
- Tunbridge Wells Borough Council
- UK Parking Control
- Wakefield Metropolitan District Council
- Walsall Metropolitan Borough Council
- Warrington Borough Council
- Waverley Borough Council
- Wirral Borough Council
- Wolverhampton City Council