1918–1950: The Borough of Wenlock, the Urban Districts of Dawley, Newport, Oakengates, and Wellington, and the Rural Districts of Newport, Shifnal, and Wellington.
When originally constituted, the constituency, with a population of 71,352, was the largest division of Shropshire created in the 1918 boundary changes.[2]
1950–1983: The Urban Districts of Dawley, Newport, Oakengates, and Wellington, and the Rural Districts of Shifnal and Wellington.
1983–1997: The District of The Wrekin wards of Arleston, Brookside, College, Cuckoo Oak, Dawley Magna, Donnington, Donnington Wood, Dothill, Ercall, Hadley, Haygate, Hollinswood/Randlay, Ironbridge (The Gorge), Ketley, Ketley Bank, Langley, Lawley, Leegomery, Lilleshall, Madeley, Malinslee, Park, Priorslee, Stirchley, Wombridge, Woodside, Wrockwardine, and Wrockwardine Wood.
1997–2010: The District of The Wrekin wards of Arleston, Church Aston, College, Donnington, Donnington Wood, Dothill and Park, Edgmond, Ercall, Ercall Magna, Hadley, Haygate, Ketley, Leegomery, Lilleshall, Newport East, Newport North, Newport West, and Wrockwardine, and the District of Bridgnorth wards of Albrighton, Idsall, Manor, and Sheriffhales.
Parliament approved major boundary changes which took effect at the 1997 general election, which created a new constituency containing and named after the town of Telford, before which Telford had been one of the largest elements of The Wrekin. The new Telford constituency took 62.9% of the electorate of The Wrekin leaving the remaining 37.1% to constitute a revised constituency of The Wrekin that incorporated areas previously within North Shropshire and Ludlow (mainly comprising areas which had previously been in the constituency prior to 1983).[4]
2010–2024: The Borough of Telford and Wrekin wards of Apley Castle, Arleston, Church Aston and Lilleshall, College, Donnington, Dothill, Edgmond, Ercall, Ercall Magna, Hadley and Leegomery, Haygate, Muxton, Newport East, Newport North, Newport South, Newport West, Park, Shawbirch, and Wrockwardine, and the District of Bridgnorth wards of Albrighton South, Donington and Albrighton North, Shifnal Idsall, Shifnal Manor, and Shifnal Rural.
Boundary changes to realign the constituency boundaries to fit with the borough's most recent ward revisions resulted in the removal of Ketley to the constituency of Telford for the 2010 general election.[5]
2024–present: Further to the 2023 Periodic Review of Westminster constituencies (based on local authority wards in place on 1 December 2020) and taking into account a further local government boundary review in the Borough of Telford and Wrekin which came into effect in May 2023[6][7], the constituency now comprises the following from the 2024 general election:
The County of Shropshire electoral divisions of: Albrighton; Cheswardine; Hodnet; Shifnal North; Shifnal South and Cosford.
The Borough of Telford and Wrekin wards of: Admaston & Bratton; Apley Castle; Arleston & College; Church Aston & Lilleshall; Donnington (nearly all); Edgmond; Ercall; Ercall Magna; Hadley & Leegomery; Haygate & Park; Lawley (small part); Muxton; Newport East; Newport North; Newport South; Newport West; Shawbirch & Dothill; Wrockwardine.[8]
The electoral divisions of Hodnet and Cheswardine were added from the North Shropshire constituency and there was a small adjustment in the Telford and Wrekin Borough.
In its initial proposals, the boundary commission put forward the new name for the constituency of "Wellington and Newport"; this met with opposition locally and was dropped in the revised proposals.[9]
Unemployment claimants were in November 2012 lower than the national average of 3.8%, at 3.1% of the population based on a statistical compilation by The Guardian.[10]
The seat saw a first winning candidate from the Labour Party relatively early in its history, in 1923. The seat alternated between the two largest modern parties eight times between 1923 and 1979.
In more recent history, reflecting the growing population of Telford and the rich iron smelting, railway and mining industries as major historic employers in the area, the seat was more Labour-leaning than the national average but still marginal, being represented by a Conservative for the first eight years of the Thatcher ministry and then (from 1987) returning a Labour member, who was moved to a new Telford seat in 1997, and another Labour member until 2005, followed by the present Conservative who was elected that year. The Conservative majority at the 2024 election was 883 votes.
Anthony Trafford (Conservative) went on after serving as MP to serve as a health minister, from the House of Lords in 1989.
Bruce Grocott (Labour) went on, after serving as MP for the newly created neighbouring seat from 1997 to 2001, to serve as the Government's Chief Whip in the House of Lords for six years.
Note: although The Wrekin was a Labour-held seat in the previous Parliament, boundary changes removed many Labour-leaning areas that now fall in the neighbouring seat of Telford, which Bruce Grocott decided to contest in 1997 instead of the new Wrekin seat. These changes made it notionally a Conservative seat, hence this is a gain rather than a hold.
Another General Election was required to take place before the end of 1940. The political parties had been making preparations for an election to take place from 1939 and by the end of this year, the following candidates had been selected;
^"MP in campaign to save landmark boundary name". Shropshire Star. 16 June 2021. p. 2. Report by Lisa O'Brien. Mark Pritchard being the MP indicated by the headline.