Urban and rural sanitary districts alongside earlier poor law unions were organised to reflect the Industrial Revolution in a less manorial and parochial, patchy way in the 19th century. By the end of that century, civil parishes had subsumed the remaining civil functions of the vestry of each parish in the region, and many new functions such as road laying were passed to Surrey County Council which, with central government bodies, took on their remaining purpose, that of national and local poor relief taxation.
Modern settlements and administration
The division of land amounts to the southern two-thirds of the borough of Reigate and Banstead subjected to reduced boundaries losing approximately 4.7 square kilometres — in 1933 a relatively large of Chipstead and of Merstham in the north were lost to elevated Coulsdon within Greater London. As with Chipstead, Coulsdon is in an upper valley and plateau of the North Downs however has more railway stations and is a post town. It is the least dense former parish in the London Borough of Croydon. Horley has become the town of the south of the borough and one of the four towns shown the borough logo — Reigate and Redhill are in the historic hundred, leaving Banstead to the north which was not. The post and railway town of Redhill which did not exist in the early 19th century has become during the 20th century and beyond a major town on land formerly in Reigate and Merstham, expanding into the latter into the 21st century with little buffer between the three settlements today; the three forming a conurbation keeping boundaries close to the far side of the Greensand Ridge and North Downs, to the south and north respectively. Even in the 19th century rural and a rotten borough, Gatton apart from Upper Gatton within the M25 has become part of Reigate and of Redhill, indivisible from those towns while retaining Gatton Park occupied by a co-educational independent school, The Royal Alexandra and Albert School. A fraction of its land has been opened up to the public by the National Trust but is now approximately half residential land in Reigate and Redhill. Burstow's main settlement and 'village' today has become what was once its medium-sized hamlet or neighbourhood of 'Smallfield' and it has spawned an entirely independent village since the early 20th century, Outwood, Surrey. Salfords and Earlswood are a village and suburb to Redhill-Reigate, which occupy former fields and woodland of Horley and Reigate. Brockham, from the 1900s a hamlet of village size, was formally created a civil parish from the western of Betchworth in 1933.
