time difference: UTC 0 (5 hours ahead of Washington, DC during Standard Time)

daylight saving time: +1hr, begins last Sunday in March; ends last Sunday in October

note: applies to the United Kingdom proper, not to its overseas dependencies or territories

Administrative divisions:

England: 34 two-tier counties, 32 London boroughs and 1 City of London or Greater London, 36 metropolitan counties, 46 unitary authorities

two-tier counties: Bedfordshire, Buckinghamshire, Cambridgeshire,
Cheshire, Cornwall and Isles of Scilly, Cumbria, Derbyshire, Devon,
Dorset, Durham, East Sussex, Essex, Gloucestershire, Hampshire,
Hertfordshire, Kent, Lancashire, Leicestershire, Lincolnshire,
Norfolk, North Yorkshire, Northamptonshire, Northumberland,
Nottinghamshire, Oxfordshire, Shropshire, Somerset, Staffordshire,
Suffolk, Surrey, Warwickshire, West Sussex, Wiltshire, Worcestershire

London boroughs and City of London or Greater London: Barking and
Dagenham, Barnet, Bexley, Brent, Bromley, Camden, Croydon, Ealing,
Enfield, Greenwich, Hackney, Hammersmith and Fulham, Haringey,
Harrow, Havering, Hillingdon, Hounslow, Islington, Kensington and
Chelsea, Kingston upon Thames, Lambeth, Lewisham, City of London,
Merton, Newham, Redbridge, Richmond upon Thames, Southwark, Sutton,
Tower Hamlets, Waltham Forest, Wandsworth, Westminster

metropolitan counties: Barnsley, Birmingham, Bolton, Bradford, Bury,
Calderdale, Coventry, Doncaster, Dudley, Gateshead, Kirklees,
Knowlsey, Leeds, Liverpool, Manchester, Newcastle upon Tyne, North
Tyneside, Oldham, Rochdale, Rotherham, Salford, Sandwell, Sefton,
Sheffield, Solihull, South Tyneside, St. Helens, Stockport,
Sunderland, Tameside, Trafford, Wakefield, Walsall, Wigan, Wirral,
Wolverhampton

unitary authorities: Bath and North East Somerset, Blackburn with
Darwen, Blackpool, Bournemouth, Bracknell Forest, Brighton and Hove,
City of Bristol, Darlington, Derby, East Riding of Yorkshire,
Halton, Hartlepool, County of Herefordshire, Isle of Wight, City of
Kingston upon Hull, Leicester, Luton, Medway, Middlesbrough, Milton
Keynes, North East Lincolnshire, North Lincolnshire, North Somerset,
Nottingham, Peterborough, Plymouth, Poole, Portsmouth, Reading,
Redcar and Cleveland, Rutland, Slough, South Gloucestershire,
Southampton, Southend-on-Sea, Stockton-on-Tees, Stoke-on-Trent,
Swindon, Telford and Wrekin, Thurrock, Torbay, Warrington, West
Berkshire, Windsor and Maidenhead, Wokingham, York

Northern Ireland: 26 district council areas