Rochester and Chatham was a parliamentary constituency in Kent which returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom from 1950 until it was abolished for the 1983 general election.
It largely replaced the former Chatham, which in turn had taken some of the previous Rochester seat in 1918. In turn it gave way to the Medway constituency in 1983, which for the 2010 election was renamed Rochester and Strood.
Rochester and Chatham (UK Parliament constituency) Wikipedia
The Municipal Boroughs of Chatham and Rochester.