Avon was abolished in 1996 both as a county council and a ceremonial county, but the name Avon continues to be used unofficially in subsequent boundary reviews as presented by the Boundary Commission for England to describe the area covered by the former county for the purpose of the rules which strongly deter cross-council constituencies (spanning more than one local authority within its area).

The Boundary Commission for England reviewed Avon in 2000 and devised a constituencies scheme in which no constituency spanned the four unitary authority boundaries within the abolished county. This entailed four seats to Bristol, three to South Gloucestershire and two each to Bath and North East Somerset and North Somerset and accordingly a net increase of one seat. Constituency names were aligned with the new local council names.^[1][2] These changes were implemented at the 2010 general election. Bath was restored as a borough constituency (to which a different election expenses quota and returning officer applies compared to county constituencies). Thus Avon has 6 borough constituencies and 5 county constituencies.

The immediate predecessor constituency definitions had persisted, with slight amendments in 1997, from before the general election in 1983 to that of 2005. The area had been used as a convenient unit for division into ten parliamentary constituencies (five borough constituencies and five county constituencies).^[3]

  † Conservative   ‡ Labour   ¤ Liberal Democrat   ♣ Green

More information Constituency, Electorate ...

Constituency[nb 1]	Electorate[4]	Majority[5]	Member of Parliament[5]		Nearest opposition[5]		Electoral wards[6]	Map
Bath BC	67,805	12,232		Wera Hobhouse¤		Annabel Tall†	Bath and North East Somerset Council: Bathwick, Combe Down, Kingsmead, Lambridge, Lansdown, Moorlands, Newbridge (part), Odd Down, Oldfield Park, Southdown, Twerton, Walcot, Westmoreland, Weston and Widcombe and Lyncombe.
Bristol East BC	73,867	10,794		Kerry McCarthy‡		Sarah Codling†	Bristol City Council: Brislington East, Brislington West, Eastville, Frome Vale, Hillfields, St George East, St George West, Stockwood.
Bristol North West BC	76,273	5,692		Darren Jones‡		Mark Weston†	Bristol City Council: Avonmouth, Henbury, Henleaze, Horfield, Kingsweston, Lockleaze, Southmead, Stoke Bishop, Westbury-on-Trym.
Bristol South BC	84,079	9,859		Karin Smyth‡		Richard Morgan†	Bristol City Council: Bedminster, Bishopsworth, Filwood, Hartcliffe, Hengrove, Knowle, Southville, Whitchurch Park, Windmill Hill.
Bristol West BC	99,253	28,219		Thangam Debbonaire‡		Carla Denyer♣	Bristol City Council: Ashley, Bishopston, Cabot, Clifton, Clifton East, Cotham, Easton, Lawrence Hill, Redland.
Filton and Bradley Stoke CC	74,016	5,646		Jack Lopresti†		Mhairi Threlfall‡	South Gloucestershire Council: Almondsbury, Bradley Stoke Baileys Court, Bradley Stoke Bowsland, Bradley Stoke Sherbourne, Downend, Filton, Patchway, Pilning and Severn Beach, Staple Hill, Stoke Gifford and Winterbourne.
Kingswood BC	68,972	2,501 (2024)		Damien Egan‡		Sam Bromiley†	South Gloucestershire Council: Willsbridge, Bitton, Hanham, Kings Chase, Longwell Green, Oldland Common, Parkwall, Rodway, Siston, Woodstock.
North East Somerset CC	73,692	14,729		Jacob Rees-Mogg†		Mark Huband‡	Bath and North East Somerset Council: Bathavon North, Bathavon South, Clutton and Farmborough, Chew Valley, High Littleton, Keynsham North, Keynsham South, Keynsham East, Mendip, Midsomer Norton North, Midsomer Norton Redfield, Newbridge (part), Paulton, Peasedown, Publow and Whitchurch, Radstock, Saltford, Timsbury, Westfield.
North Somerset CC	80,194	17,536		Liam Fox†		Hannah Young‡	North Somerset Council: Backwell, Clevedon Central, Clevedon East, Clevedon North, Clevedon South, Clevedon Walton, Clevedon West, Clevedon Yeo, Easton-in-Gordano, Gordano, Nailsea East, Nailsea North and West, Pill, Portishead Central, Portishead Coast, Portishead East, Portishead Redcliffe Bay, Portishead South and North Weston, Portishead West, Winford, Wraxall and Long Ashton, Wrington, and Yatton.
Thornbury and Yate CC	69,492	12,369		Luke Hall†		Claire Young¤	South Gloucestershire Council: Alveston, Boyd Valley, Charfield, Chipping Sodbury, Cotswold Edge, Dodington, Frampton Cotterell, Ladden Brook, Severn, Thornbury North, Thornbury South, Westerleigh, Yate Central, Yate North, Yate West.
Weston-super-Mare CC	82,526	17,121		John Penrose†		Tim Taylor‡	North Somerset Council: Banwell and Winscombe, Blagdon and Churchill, Congresbury, Hutton and Locking, Kewstoke, Weston-Super-Mare Central, Weston-Super-Mare Clarence and Uphill, Weston-Super-Mare East, Weston-Super-Mare Milton and Old Worle, Weston-Super-Mare North Worle, Weston-Super-Mare South, Weston-Super-Mare South Worle, Weston-Super-Mare West.

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Under the Fifth Periodic Review of Westminster constituencies, the Boundary Commission for England decided to increase the number of seats which covered "Avon" from 10 to 11, with the creation of Filton and Bradley Stoke. This resulted in major changes to Kingswood and three of the four Bristol constituencies. A further three constituencies were renamed.

(The maps on this page do not show the nominal extensions of several constituencies over the waters of the Bristol Channel.)

Other former constituencies in the area were:

• Bristol Central abolished 1974
• Bristol South East abolished 1983
• Bristol North East abolished 1983
• South Gloucestershire abolished 1983

See 2023 Periodic Review of Westminster constituencies for further details.

Following the abandonment of the Sixth Periodic Review (the 2018 review), the Boundary Commission for England formally launched the 2023 Review on 5 January 2021.^[7] Initial proposals were published on 8 June 2021 and, following two periods of public consultation, revised proposals were published on 8 November 2022. The final proposals were published on 28 June 2023.

The commission has proposed that "Avon" (covering the Bath and North East Somerset, Bristol, North Somerset, and South Gloucestershire council areas) be combined with Devon and Somerset as a sub-region of the South West Region, resulting in significant change to the existing pattern of constituencies. In Avon, Bristol West, Kingswood and North East Somerset will disappear, being replaced by Bristol Central, Bristol North East, and North East Somerset and Hanham. In addition, Frome and East Somerset, and Wells and Mendip Hills will be established as cross-authority boundary seats.^[8][9]

The following seats are proposed:

Containing electoral wards from Bath and North East Somerset

• Bath
• Frome and East Somerset (part also in the Somerset District of Mendip)
• North East Somerset and Hanham (part)

Containing electoral wards in Bristol

• Bristol Central
• Bristol East
• Bristol North East (part)
• Bristol North West
• Bristol South

Containing electoral wards in North Somerset

• North Somerset
• Wells and Mendip Hills (parts also in Somerset Districts of Mendip and Sedgemoor)
• Weston-super-Mare

Containing electoral wards in South Gloucestershire

• Filton and Bradley Stoke
• North East Somerset and Hanham (part)
• North East Bristol (part)
• Thornbury and Yate

Primary data source: House of Commons research briefing - General election results from 1918 to 2019^[10]

2019

The number of votes cast for each political party who fielded candidates in constituencies comprising Avon in the 2019 general election were as follows:

More information Party, Votes ...

Party	Votes	%	Change from 2017	Seats	Change from 2017
Conservative	258,867	41.7%	0.9%	6	0
Labour	221,714	35.7%	5.0%	4	0
Liberal Democrats	97,767	15.8%	4.0%	1	0
Greens	34,563	5.6%	2.1%	0	0
Brexit	5,717	0.9%	new	0	0
Others	1,559	0.3%	1.1%	0	0
Total	620,187	100.0		11

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• List of constituencies in South West England