More than one million UK council workers have been striking, the trade unions say.
The Metro on Tyneside has come to a standstill
Hundreds of schools, libraries and sports centres were closed with other services such as transport, courts and refuse collection hit.
How has the action affected different parts of the country?
NORTH EAST ENGLAND
Tyne and Wear Metro not operating and Tyne Tunnel closed to private vehicles but open to emergency vehicles and scheduled bus services.
The Tyne pedestrian tunnel has stayed open.
Multi-storey car parks in the heart of Newcastle closed and traffic wardens on strike.
Hundreds of schools across Tyneside, Wearside, County Durham, Northumberland and Teesside either completely or partially closed.
Both the Mersey tunnels and Mersey ferry closed.
The Queensway tunnel in Liverpool is closed
Merseytravel said only emergency services would be able to use the Kingsway and Queensway Tunnels until early on Wednesday.
Traffic from Wirral and Cheshire trying to get into Liverpool via the Runcorn-Widnes Bridge was reported to be busier than usual.
Ferry passengers advised to use rail services to cross the river.
Public service union, Unison, said 120 schools, 24 libraries and 15 leisure centres in Liverpool were closed by the strike.
Hundreds of schools closed across the region.
More than 200 schools shut in Nottinghamshire, with 136 closing in Derbyshire, 74 in Leicestershire and a minimum of 28 in Lincolnshire.
Bin collections affected.
Other services likely to have suffered include social services' day care facilities - but not vital social care such as residential care, meals at home and home care - libraries, museums, public swimming pools and multi-storey car parks.
Some 150 primary and secondary schools partially or completely closed.
Twenty-six community libraries, three leisure centres and 21 neighbourhood offices closed and no domestic refuse collection or street cleaning in parts of Birmingham.
A spokesman for Sandwell Metropolitan Borough Council said essential services for vulnerable people had remained unaffected, but it was thought about 33 schools were closed for some or all of the day.
In Shropshire, refuse collections were not taking place in many areas.
Dozens of schools were closed with 40 in Warwickshire, 20 in Worcestershire and 11 in Herefordshire.
Half of London's schools had been expected to be close, Unison said.
School support staff and refuse collectors among the 100,000 members expected to take part in the strike.
Workers in the London Fire Brigade's control room were expected to go on strike, although they said they would provide emergency cover.
SOUTH EAST ENGLAND
Some 800 civilian employees of Kent Police among around 50,000 public sector workers in the South East taking part in the strike, with picket lines at most police stations.
A quarter of Brighton's 80 schools closed, as were libraries and museums and the Royal Pavilion.
In East Sussex, 12 schools were closed, in Surrey there were 20 and in West Sussex, three out of a total of 300 were shut.
Disruption elsewhere in West Sussex was "fairly minimal" according to a county council spokesman.
SOUTH WEST ENGLAND
Schools, libraries and leisure centres across the South West closed as more than 100,000 public sector workers walked out.
Transport in the region was affected by the closure of the Torpoint and Dartmouth Lower Ferry services.
Non-emergency calls were hit as police staff in Exeter joined the strike. Devon and Cornwall Police said all 999 emergency calls were answered and dealt with as normal.
More than 80,000 council workers in Wales taking part in the one-day strike.
At least 739 schools closed, with many libraries and leisure centres also shut.
There were wide variations on how schools are affected across the 22 Welsh local authorities.
In Pembrokeshire, just one school was expected to close, while in Neath and Port Talbot all schools were shut.
Major disruption to services such as schools and transport in Scotland, where more than 200,000 staff supported the strike.
Glasgow City Council confirmed 353 of its primary schools and nurseries were closed.
All but two of Aberdeen City Council's 77 schools and nurseries closed, 63 in Dundee and 21 primary schools and four secondaries in Edinburgh, with many more partially closed.
Glasgow's underground system and main bus station both closed - although bus services operated as normal - and Edinburgh's council-run bus service, Lothian Buses, were out of action.
Both the Forth and Tay Road Bridges toll-free for the day, and there was disruption to a number of ferry services across the country.
All bus and rail services cancelled. Cross-border train services operating between Belfast and Dublin were among those affected.
Schools were affected by the stoppage with 65,000 pupils who use school buses having to make alternative arrangements.