On 5 May 2011, the United Kingdom held a referendum on whether to change the system for electing members to the House of Commons, the lower house of the national Parliament at Westminster. In the event of a "Yes" vote, future general elections would use the "alternative vote"; in the event of a "No" vote, the existing first-past-the-post system would remain in place. The votes cast in the referendum were first counted in each of 440 districts or electoral divisions across the country (the "local counting areas"),Parliamentary Voting System and Constituencies Act 2011 Part 1; Section 7(2) — note: the legislation refers to them as the "voting areas". which were then combined and declared at a regional level (the regions being the constituent countries of Wales, Scotland and Northern Ireland, and the regions of England).

Under the provisions of the Parliamentary Voting System and Constituencies Act 2011 there was a total of 440 voting areas across twelve regions using the same boundaries as used in European Parliamentary elections since 1999 under the provisions of the European Parliamentary Elections Act 2002 with the exception of Gibraltar which did not participate in the referendum. In England the 326 local government districts were used as the voting areas; these consist of all unitary authorities, all metropolitan boroughs, all shire districts, the London boroughs, the City of London and the Isles of Scilly. As the date of the plebiscite coincided with elections to the Scottish Parliament, Welsh Assembly and the Northern Ireland Assembly different arrangements were required for the devolved nations so in Scotland the 73 Scottish Parliamentary constituencies were used as the Scottish counting areas and in Wales the 40 Welsh assembly constituencies were used as the Welsh counting areas and Northern Ireland was a single counting area.

Ballots were due to be verified by 13:00 BST on 6 May 2011 and the votes were counted from 16:00 BST onwards. Both the local and regional results were updated live online via aboutmyvote.co.uk, a publicly accessible website run by the Electoral Commission.

This article lists, by voting area, all the results of the referendum, each ordered into national and regional sections.

United Kingdom The national result for the whole United Kingdom was announced at the Platinum Suite at the Exhibition Centre London (ExCel)Referendum on the voting system for the UK Parliament , Electoral Commission, 3 April 2011 by the Chief counting officer (CCO) and Chair of the Electoral Commission, Jenny Watson, at 01:00 BST on Saturday 7 May 2011 after all 440 voting areas and UK regions had declared their results.electoarlcommission.org.uk, 7 May 2011 With a national turnout of 42% the target to secure the majority win for the winning side was 9,639,512 votes. The decision by the people who voted was a decisive "No" vote to adopting the alternative vote system in future United Kingdom general elections by a majority of 6,860,516 votes over those who had voted "Yes" in favor of the proposal.

Results by United Kingdom regions

Region Electorate Voter turnout, of eligible Votes Proportion of votes Invalid votes Highest Yes vote Highest No vote Yes No Yes No East Midlands 3,348,469 42.8% 408,8771,013,864 28.74%71.26% 9,486 Leicester 42.85% South Holland 78.57% East of England 4,263,006 43.1% 530,1401,298,004 29.00%71.00% 11,218 Cambridge 54.32% Castle Point 79.71% Greater London 5,258,802 35.4% 734,4271,123,480 39.53%60.47% 4,561 Hackney 60.68% Havering 77.30% North East England 1,968,137 38.8% 212,951546,138 28.05%71.95% 3,214 Newcastle upon Tyne 35.85% Hartlepool 76.95% North West England 5,239,323 39.1% 613,2491,416,201 30.22%69.78% 19,273 Manchester 44.47% Wyre 76.69% Northern Ireland 1,198,966 55.8% 289,088372,706 43.68%56.32% 7,062 One voting area One voting area Scotland 3,893,268 50.7% 713,8131,249,375 36.36%63.64% 12,370 Glasgow Kelvin 58.78% Banffshire and Buchan Coast 70.93% South East England 6,288,366 43.1% 823,7931,951,793 29.68%70.32% 12,594 Oxford 54.11% Havant 77.02% South West England 4,028,829 44.6% 564,5411,225,305 31.54%68.46% 7,399 Bristol 44.68% East Dorset 76.89% Wales 2,268,739 41.7% 325,349616,307 34.55%65.45% 5,267 Cardiff Central 45.68% Clwyd West 69.78% West Midlands 4,093,521 39.8% 461,8471,157,772 28.52%71.48% 13,845 Birmingham 35.71% South Staffordshire 79.07% Yorkshire and the Humber 3,835,075 39.9% 474,5321,042,178 31.29%68.71% 13,722 Sheffield 38.28% North East Lincolnshire 75.54%

Results by United Kingdom constituent countries

Country Electorate Voter turnout, of eligible Votes Proportion of votes Invalid votes Yes No Yes No England 38,323,528 40.7% 4,786,53210,724,067 30.86%69.14% 95,322 Northern Ireland 1,198,966 55.8% 289,088372,306 43.68%56.32% 7,062 Scotland 3,893,269 50.7% 713,8131,249,375 36.36%63.64% 12,370 Wales 2,268,739 41.7% 325,349616,307 34.55%65.45% 5,267

Local results Of the 440 voting areas, ten returned a majority in favour of the change (Cambridge, Oxford, Glasgow Kelvin, Edinburgh Central, and the London Boroughs of Hackney, Islington, Haringey, Lambeth, Southwark and Camden). The counting area with the highest proportion of AV supporters was the London Borough of Hackney with 60.68% in favour of the change (34.23% turnout) and the lowest proportion was the borough of Castle Point, Essex with 20.29% in favour (41.38% turnout).

England The English local districts were used as the voting areas for the referendum in England; these consist of all unitary authorities, all metropolitan boroughs, all shire districts, the London boroughs, the City of London and the Isles of Scilly.

The English Regions were also then used to count the votes at the regional level meaning there was no single national count of the votes. All nine regions in England returned huge "No" votes.

East Midlands

The East Midlands region was broken down into 40 voting areas.

Counting Area Turnout % No votes Yes votes No % Yes % Amber Valley 43.86 70.52 29.48 Ashfield 38.87 73.74 26.26 Bassetlaw 41.72 75.12 24.88 Blaby 41.97 74.01 25.99 Bolsover 39.76 74.06 25.94 Boston 39.58 77.11 22.89 Broxtowe 48.36 68.67 31.33 Charnwood 42.52 70.71 29.29 Chesterfield 42.87 70.07 29.93 Corby 43.01 71.81 28.19 Daventry 45.95 75.19 24.81 Derby 39.50 69.90 30.10 Derbyshire Dales 52.22 70.38 29.62 East Lindsey 42.60 76.31 23.69 East Northamptonshire 43.85 75.69 24.31 Erewash 43.04 74.38 25.62 Gedling 44.90 71.45 28.55 High Peak 44.40 67.38 32.62 Harborough 48.23 74.30 25.70 Hinckley and Bosworth 44.10 73.52 26.48 Kettering 42.90 74.73 25.27 Leicester 41.79 57.15 42.85 Lincoln 36.68 69.84 30.16 Mansfield 38.09 71.83 28.17 Melton 44.69 73.24 26.76 Newark and Sherwood 45.05 73.01 26.99 North East Derbyshire 42.82 74.02 25.98 Northampton 39.68 69.94 30.06 North Kesteven 42.95 77.56 22.44 North West Leicestershire 45.46 76.59 23.41 Nottingham 35.76 62.64 37.36 Oadby and Wigston 43.25 70.72 29.28 Rushcliffe 51.80 67.86 32.14 Rutland 49.27 72.51 27.49 South Derbyshire 43.57 75.76 24.24 South Holland 39.83 78.57 21.43 South Kesteven 42.63 74.12 25.88 South Northamptonshire 48.01 71.61 28.39 Wellingborough 45.70 73.97 26.03 West Lindsey 43.70 73.56 26.44

East of England

The East of England region was broken down into 47 voting areas.

Counting Area Turnout % No votes Yes votes No % Yes % Babergh 43.46 67.71 32.29 Basildon 35.11 76.52 23.48 Bedford 47.04 69.23 30.77 Braintree 42.96 75.15 24.85 Breckland 42.33 75.34 24.66 Brentwood 46.29 75.83 24.17 Broadland 46.88 72.98 27.02 Broxbourne 36.33 79.54 20.46 Cambridge 48.43 45.68 54.32 Castle Point 41.38 79.71 20.29 Central Bedfordshire 42.02 72.87 27.13 Chelmsford 44.42 71.43 28.57 Colchester 42.11 65.82 34.18 Dacorum 44.96 69.75 30.25 East Cambridgeshire 43.93 68.97 31.03 East Hertfordshire 45.24 72.47 27.53 Epping Forest 38.39 76.80 23.20 Fenland 38.83 76.90 23.10 Forest Heath 37.71 76.38 23.62 Great Yarmouth 36.58 75.23 24.77 Harlow 37.36 73.59 26.41 Hertsmere 39.95 76.47 23.53 Huntingdonshire 44.45 71.89 28.11 Ipswich 39.24 69.88 30.12 King's Lynn and West Norfolk 42.58 75.55 24.45 Luton 39.45 68.61 31.39 Maldon 43.20 75.93 24.07 Mid Suffolk 47.95 71.73 28.27 North Hertfordshire 45.94 69.11 30.89 North Norfolk 50.09 70.76 29.24 Norwich 40.88 54.52 45.48 Peterborough 41.18 67.91 32.09 Rochford 40.89 79.07 20.93 South Cambridgeshire 49.29 65.34 34.66 Southend-on-Sea 38.33 71.81 28.19 South Norfolk 47.23 70.85 29.15 St Albans 51.90 63.85 36.15 St Edmundsbury 42.68 71.54 28.46 Stevenage 41.64 71.03 28.97 Suffolk Coastal 49.77 71.36 28.64 Tendring 43.89 71.00 29.00 Three Rivers 44.14 72.24 27.76 Thurrock 34.59 75.24 24.76 Uttlesford 49.19 73.91 26.09 Watford 41.69 64.49 35.51 Waveney 43.11 73.73 26.27 Welwyn Hatfield 42.74 72.57 27.43

Greater London

The London region was broken down into 33 voting areas.

Counting Area Turnout % No votes Yes votes No % Yes % Barking and Dagenham 27.7770.3029.70 Barnet 38.91 64.78 35.22 Bexley 37.4876.5123.49 Brent 29.68 54.77 45.23 Bromley 41.28 71.26 28.74 Camden 37.41 48.60 51.40 City of London 42.65 53.64 46.36 City of Westminster 31.53 61.88 38.12 Croydon 35.90 67.01 32.99 Ealing 36.21 56.75 43.25 Enfield 35.43 66.03 33.97 Greenwich 33.26 60.84 39.16 Hackney 34.23 39.32 60.68 Haringey 35.70 43.38 56.62 Harrow 37.94 66.14 33.86 Hammersmith and Fulham 37.85 59.08 40.92 Havering 35.92 77.30 22.70 Hillingdon 34.10 70.68 29.32 Hounslow 32.83 60.84 39.16 Islington 35.80 43.08 56.92 Kensington and Chelsea 34.40 67.71 32.29 Kingston upon Thames 42.81 60.52 39.48 Lambeth 33.16 45.31 54.69 Lewisham 33.20 50.65 49.35 Merton 39.83 64.63 35.37 Newham 27.16 56.30 43.70 Redbridge 32.92 67.55 32.45 Richmond upon Thames 47.15 59.06 40.94 Southwark 34.43 47.27 52.73 Sutton 38.90 67.40 32.60 Tower Hamlets 28.86 54.17 45.83 Waltham Forest 33.83 58.43 41.57 Wandsworth 37.07 60.79 39.21

North East England

The North East England region was broken down into 12 voting areas.

Counting Area Turnout % No votes Yes votes No % Yes % Darlington 41.47 71.66 28.34 Durham 34.95 71.25 28.75 Gateshead 41.28 73.24 26.76 Hartlepool 31.45 76.95 23.05 Middlesbrough 35.69 71.18 28.82 Newcastle upon Tyne 40.93 64.15 35.85 North Tyneside 41.82 74.69 25.31 Northumberland 40.78 72.68 27.32 Redcar and Cleveland 41.41 73.39 26.61 South Tyneside 39.13 71.85 28.15 Stockton-on-Tees 38.71 74.60 25.40 Sunderland 37.64 73.44 26.56

North West England

The North West England region was broken down into 39 voting areas.

Counting Area Turnout % No votes Yes votes No % Yes % Allerdale 45.25 24,533 8,354 74.60 25.40 Barrow-in-Furness 36.00 75.92 24.08 Blackburn with Darwen 43.26 72.33 27.67 Blackpool 36.88 74.21 25.79 Bolton 38.09 71.81 28.19 Burnley 38.84 72.79 27.21 Bury 40.28 72.83 27.17 Carlisle 39.72 22,611 10,202 68.91 31.09 Cheshire East 43.04 88,669 33,241 72.73 27.27 Cheshire West and Chester 43.11 78,450 30,322 72.12 27.88 Chorley 42.39 74.50 25.50 Copeland 41.07 16,907 5,628 75.03 24.97 Eden 45.07 71.35 28.65 Fylde 44.62 76.37 23.63 Halton 34.18 71.91 28.09 Hyndburn 40.35 17,891 6,167 74.37 25.63 Knowsley 33.05 68.67 31.33 Lancaster 39.09 28,555 13,504 67.89 32.11 Liverpool 35.92 63.61 36.39 Manchester 32.04 60,495 48,442 55.53 44.47 Oldham 38.60 42,623 17,076 71.40 28.60 Pendle 43.69 75.29 24.71 Preston 38.44 68.84 31.16 Ribble Valley 44.93 75.24 24.76 Rochdale 36.30 71.01 28.99 Rossendale 38.17 72.98 27.02 Salford 33.15 69.24 30.76 Sefton 39.22 57,289 23,925 70.54 29.46 South Lakeland 50.28 67.44 32.56 South Ribble 40.16 74.31 25.69 St Helens 37.96 71.46 28.54 Stockport 41.64 66.70 33.30 Tameside 36.00 72.34 27.66 Trafford 42.73 48,602 22,687 68.18 31.82 Warrington 39.39 40,442 19,134 67.88 32.12 West Lancashire 39.83 72.76 27.24 Wigan 33.55 61.00 39.00 Wirral 43.16 73,120 28,627 71.86 28.14 Wyre 44.26 76.69 23.31

South East England

The South East England region was broken down into 67 voting areas.