The Municipal Corporations Act 1835 (5 & 6 Will. 4. c. 76), sometimes known as the Municipal Reform Act, was an act of the Parliament of the United Kingdom that reformed local government in the incorporated boroughs of England and Wales. The legislation was part of the reform programme of the Whigs and followed the Reform Act 1832 (2 & 3 Will. 4. c. 45), which had abolished most of the rotten boroughs for parliamentary purposes.

Royal commission The government of Lord Grey, having carried out reform of parliamentary constituencies, turned its attention to local government. In February 1833 a select committee was appointed "to inquire into the state of the Municipal Corporations in England, Wales, and Ireland; and to report if any, and what abuses existed in them, and what measures, in their opinion, it would be most expedient to adopt, with a view to the correction of those abuses". The committee made their report in June 1833, having inquired into a handful of boroughs. The committee found that:

The committee did not believe that they had sufficient powers to carry out a full review of the existing system. They instead recommended the appointment of a royal commission, and that the country be divided into districts with a commissioner responsible for enquiring into boroughs in each district.

The royal commission was appointed by letters patent passed under the great seal. The commission, which was dominated by Radicals, had eighteen members, with two assigned to each district or circuit: North Midland: Richard Whitcombe and Alexander Edward Cockburn Eastern: George Long and John Buckle South Western: Henry Roscoe and Edward Rushton Southern: John Elliot Drinkwater and Edward John Gambier Western: Charles Austin and James Booth Midland: Peregrine Bingham and David Jardine Northern: Fortunatus Dwarris and Sampson Augustus Rambull North-Western: George Hutton Wilkinson and Thomas Jefferson Hogg South-Eastern: Thomas Flowers Ellis and Daniel Maude

The commission's secretary was Joseph Parkes.

Report The commission issued its report in 1835. Altogether 285 towns had been investigated. The main conclusions of the report were: The corporations were exclusive bodies with no community of interest with the town after which they were named. The electorate of some corporations was kept as small as possible. Some corporations merely existed as "political engines" for maintaining the ascendancy of a particular party. Members of corporations usually served for life and the corporate body was a self-perpetuating entity. Roman Catholics and Dissenters, although no longer disabled from being members, were systematically excluded. Vacancies rarely occurred and were not filled by well-qualified persons. Some close corporations operated in almost complete secrecy, sometimes secured by oath. Local residents could not obtain information on the operation of the corporation without initiating expensive legal actions. The duties of the mayor were, in some places, completely neglected. Magistrates were appointed by the corporations on party lines. They were often incompetent and lacked the respect of the inhabitants. Juries in many boroughs were exclusively composed of freemen. As the gift of freedom lay with the corporation, they were political appointees and often dispensed justice on a partisan basis. Policing in the boroughs was often not the responsibility of the corporation but of one or more bodies of commissioners. An extreme example was the City of Bath, which had four districts under different authorities, while part of the city had no police whatever. Borough funds were "frequently expended in feasting, and in paying the salaries of unimportant officers" rather than on the good government of the borough. In some places funds had been expended on public works without adequate supervision, and large avoidable debts had accrued. This often arose from contracts being given to members of the corporation or their friends or relations. Municipal property was also treated as if it were only for the use of the corporation and not the general population.

The commission concluded its report by stating that:

Effects of the act The act established a uniform system of municipal boroughs, to be governed by town councils elected by ratepayers (termed 'burgesses'). The reformed boroughs were obliged to publish their financial accounts and were liable to audit. Each borough was to appoint a salaried town clerk and treasurer who were not to be members of the council.

The act reformed 178 boroughs. The Burgh Reform Act 1833 (3 & 4 Will. 4. c. 46) had already carried similar reforms in Scotland. Similar legislation would not be introduced in Ireland until the Municipal Reform Act 1840 (3 & 4 Vict. c. 108). There remained more than 100 unreformed boroughs, which generally either fell into desuetude or were replaced later under the terms of the act. The last of these was not reformed or abolished until 1886. The reform excluded the City of London, which remained under jurisdiction of the same corporation. Many of the reformed boroughs had their municipal boundaries adjusted to match the parliamentary boundaries which had been reformed three years earlier under the Parliamentary Boundaries Act 1832 (2 & 3 Will. 4. c. 64).Schedules A and B of the 1835 Act distinguish between those boroughs where the parliamentary boundary was to be used to define the new municipal borough, and those where the pre-existing municipal boundaries would continue to be used.

The act allowed unincorporated towns to petition for incorporation. The industrial towns of the Midlands and North quickly took advantage of this, with Birmingham and Manchester becoming boroughs as soon as 1838. Altogether, 62 additional boroughs were incorporated under the act.

The new corporations had annual elections, with a third of the councillors up for election each year. The council also elected aldermen to serve on the council, with a six-year term. Towns were divided into wards. The act also changed the enrollment of new freemen and burgesses in each of the boroughs, changing the criteria to be solely due to occupancy and payment of rates, and abolishing any previous criteria in earlier borough charters.

The act was repealed "subject to the exceptions and qualifications in this Act mentioned" by section 5 of, and part I of the first schedule to, the Municipal Corporations Act 1882 (45 & 46 Vict. c. 50).

The 178 reformed boroughs

The list shows the style by which the unreformed corporation was known, and the date of its governing charter. In most cases this was the last in a succession of charters granted by a number of monarchs. In a few cases boroughs had no charter, or the charter was lost.

Number Borough Style of unreformed corporation Governing charter County Present governance 1 AberystwythMayor and Burgesses of the Town, Borough, and Liberty of Aberystwith1544 Cardiganshire Aberystwyth Town Council 2 AbingdonMayor, Bailiffs, and Burgesses of the Borough of Abingdon1557 Berkshire Abingdon Town Council 3 AndoverBailiff, approved Men, and Burgesses of the Borough of Andover1599 Hampshire Test Valley Borough Council (charter trustees 1974–1976) 4 ArundelMayor, Steward and Burgesses of Arundel1586 Sussex Arundel Town Council 5 BanburyMayor, Aldermen, and Burgesses of the Borough of Banbury in the County of Oxford1554 Oxfordshire and Northamptonshire Banbury Town Council (charter trustees 1974–2000) 6 BarnstapleMayor, Aldermen, and Burgesses of the Borough and Parish of Barnstaple in the County of Devon1610 Devon Barnstaple Town Council 7 BasingstokeMayor, Aldermen and Burgesses of Basingstoke1622, confirmed 1641 Hampshire Basingstoke and Deane Borough Council (charter trustees 1974–1978) 8 BathMayor, Aldermen, and Citizens of the City of Bath1590 and 1794 Somerset Became district in 1974 as is; merged in 1996 to district of Bath and North East Somerset; charter trustees extant 9 BeaumarisAldermen, Bailiffs and Burgesses of Beaumaris 1562 AngleseyBeaumaris Town Council 10 Beccles Portreeve, Steward and Burgesses of Beccles 1584 Suffolk Beccles Town Council 11 Bedford Mayor, Bailiffs, and Burgesses of the Town of Bedford 1684/5 Bedfordshire Bedford Borough Council (charter trustees until 1975) 12 Berwick-upon-Tweed Mayor, Bailiffs, and Burgesses of the Borough of Berwick-upon-Tweed 1604 Northumberland Berwick-upon-Tweed Borough Council 13 BeverleyMayor, Aldermen, and Burgesses of the Borough of Beverley in the County of York1573 Yorkshire Charter trustees (Beverley Borough Council from 1974 to 1996) 14 BewdleyBailiffs, Burgesses, and Inhabitants of the Town and Borough of Bewdley1606, 1708 Worcestershire Bewdley Town Council 15 BidefordMayor, Aldermen, and Capital Burgesses of the Borough, Town, and Manor of Bideford in the County of Devon1573, 1610 Devon Bideford Town Council 16 Blandford ForumBailiff, Seneschal and Capital Burgesses of Blandford Forum1605 Dorset Blandford Forum Town Council 17 BodminMayor, Aldermen and Councilmen of Bodmin1798