By September 2011, there were more than 1,000 amateur roller derby leagues, covering every inhabited continent, with teams in countries such as Canada, Australia, the United Kingdom, New Zealand, Germany, Belgium, Finland, Sweden and Singapore In the UK, the sport is mostly played by women.
Contemporary roller derby has a basic set of rules, with variations reflecting the interests of a governing body's member leagues. The Women's Flat Track Derby Association (WFTDA), which is used by the majority of leagues around the world. For example, members of the United Kingdom Roller Derby Association are required to play by WFTDA rules, while members of the Canadian Women's Roller Derby Association are encouraged to join the WFTDA.
England
Bath, Somerset – Bath Roller Derby Girls
Bedfordshire – Bedfordshire Rollergirls
Bedfordshire – Rebellion Rollergirls (née Bedford Bandits)
Berkshire - Royal Windsor Rollergirls
Birmingham, West Midlands – Birmingham Blitz Dames
Birmingham, West Midlands – Central City Rollergirls
Birmingham, West Midlands - Crash Test Brummies
Brighton, East Sussex – Brighton Rockers Roller Derby
Bristol – Bristol Roller Derby
Cambridge, Cambridgeshire – Romsey Town Rollerbillies
Coventry, West Midlands – Coventry City Derby Dolls
Crewe, Cheshire– Railtown Loco Rollers
Croydon, Greater London – Croydon Roller Derby
Derby, Derbyshire - Haunted City Rollers
Devon and Somerset – South West Angels of Terror (S.W.A.T)
Eastbourne, East Sussex – Bourne Bombshells
North Essex – Triple Sword Roller Girls
South Essex – Seaside Siren Roller Girls
Gloucester, Gloucestershire – Severn Roller Torrent
Hampshire - Baskingstoke Bullets
Harrogate, North Yorkshire - Spa Town Roller Girls
Hereford – Hereford Roller Girls (Horror Bulls)
Hertfordshire – Full Metal Roller Derby
Hertfordshire – Hell's Belles Roller Girls
High Wycombe, Buckinghamshire – Big Bucks High Rollers
Hull - Hull's Angels Roller Dames (HARD)
Kent – Kent Roller Girls
Leeds, West Yorkshire – Leeds Roller Dolls
Leeds, West Yorkshire – Hot Wheel Roller Derby
Leicester, Leicestershire – Roller Derby Leicester
Leicester, Leicestershire – Dolly Rockit Rollers
Lincoln, Lincolnshire – Lincolnshire Bombers
Lincoln, Lincolnshire – The Imposters Roller Girls
Liverpool, Merseyside – Liverpool Roller Birds
London, Greater London – London Rockin Rollers 2007–present
London, Greater London – London Rollergirls
London - Southern Discomfort
Manchester, Greater Manchester – Rainy City Roller Girls
Manchester, Greater Manchester – Manchester Roller Derby
Mansfield, Nottinghamshire - Mansfield Misfits Roller Derby
Merseyside – Wirral Whipiteres Roller Derby
Middlesbrough, North Yorkshire – Middlesbrough Milk Rollers
Milton Keynes, Buckinghamshire – Grid City Division
Milton Keynes, Buckinghamshire – Milton Keynes Concrete Cows
Milton Keynes, Buckinghamshire – Quads of War
Newcastle, Tyne and Wear – Newcastle Roller Girls
Northampton, Northamptonshire – Northampton Shoetown Slayers
Northampton, Northamptonshire – Vendetta Vixens
Norwich, Norfolk – The Norfolk Brawds Roller Derby 2010 – present
Nottingham, Nottinghamshire – Hellfire Harlots
Nottingham, Nottinghamshire – Nottingham Roller Girls
Oxford, Oxfordshire – Oxford Roller Derby 2010 – present
Oxford, Oxfordshire – Oxford Wheels of Gory
Plymouth, Devon – Plymouth City Roller Girls
Portsmouth, Hampshire – Portsmouth Roller Wenches 2010 – present
Preston, Lancashire – Preston Roller Girls
RAF Lakenheath - Red White and Bruise Rollers
Sheffield, South Yorkshire – Sheffield Steel Rollergirls
Sheffield, South Yorkshire – The Inhuman League
Somerset – Somerset and Exeter Derby Girls
Surrey – Surrey Rollergirls
Surrey - Surrey Roller Boys - Men's and All-Gender League
Wakefield, West Yorkshire – Wakey Wheeled Cats
West Yorkshire – The Skateful Dead
Wiltshire – Wiltshire Roller Derby
Windsor, Berkshire – Royal Windsor Rollergirls
Wirral, Merseyside – Riverside Rebels Roller Derby
Wirral, Merseyside – Wirral Whipiteres Roller Derby
Wirral, Merseyside – Wirral Men's Roller Derby
Worcester - Worcester Wyldlings
Worcestershire – Worcestershire Roller Derby
Wolverhampton, West Midlands – Wolverhampton Honour Rollers
Northern Ireland
Belfast – Belfast Roller Derby (Belfast Banshees)
Scotland
Aberdeen – Granite City Roller Girls
Dundee – Dundee Roller Girls
Edinburgh – Auld Reekie Roller Girls
Forth Valley – Fierce Valley Roller Girls
Glasgow – Glasgow Rollergirls
Perth and Kinross – Fair City Rollers
Cardiff – Cardiff Roller Collective (CRoC) 2010–present
Cardiff – Tiger Bay Brawlers
Flint - North Wales Roller Derby
Machynlleth – Mid-Wales Roller Derby
Swansea – Reaper Roller Girls
Swansea – Swansea City Slayers
Neath Port Talbot -NPT Roller Derby 2012–present
Roller derby in the United Kingdom Wikipedia (Text) CC BY-SA