The 3rd, 4th and 5th boundary reviews for Suffolk, part of its history of Parliamentary constituencies and boundaries, occurred in 1983, 1997 and 2010, respectively.
In the Fifth Review the Boundary Commission for England recommended that Suffolk retained its current constituencies, with changes only to reflect revisions to local authority ward boundaries. The boundary commissions in the United Kingdom are non-departmental public bodies responsible for determining the boundaries of constituencies for elections to the House of Commons. On 1 April 1974, under the Local Government Act 1972, East Suffolk, West Suffolk, and Ipswich were merged to form the unified county of Suffolk. The county was divided into several local government districts: Babergh, Forest Heath, Ipswich, Mid Suffolk, St Edmundsbury, Suffolk Coastal, and Waveney. In 2007, the Department for Communities and Local Government referred Ipswich Borough Council's bid to become a new unitary authority to the Boundary Committee. In February 2010, the then-Minister Rosie Winterton announced that no changes would be imposed on the structure of local government in the county as a result of the review, but that the government would be: "asking Suffolk councils and MPs to reach a consensus on what unitary solution they want through a countywide constitutional convention". It revokes structural change orders that would have established Exeter and Norwich as unitary authorities and prevents the implementation of the Suffolk unitary proposals. England: Hampshire, Warwickshire, Derbyshire, Norfolk, Essex, Lancashire, Northamptonshire, Wiltshire, Devon and Cornwall each gained one seat. The City of York was divided into two seats, neither overlapping part of North Yorkshire. Isle of Wight maintained its status as one constituency, the largest by . The metropolitan counties of West Midlands (Birmingham) and the metropolitan counties of Greater Manchester, Merseyside, Tyne and Wear, South Yorkshire and West Yorkshire lost a seat each. Inner London gained one seat while northern parts of Outer London lost two. Herefordshire and Worcestershire, to reflect their full reinstatement as separate counties, were considered in separate reviews, leading to Herefordshire being split into two constituencies, each entirely within the county. Bath, Bristol and Somerset underwent arguably the most significant changes, gaining one seat overall, to reflect the abolition of Avon. 
