The have been two Baronetcies created for persons with the surname Platt, both in the Baronetage of the United Kingdom. One creation is extinct while one is still extant.
The Platt Baronetcy, of Rusholme in the City of Manchester, was created in the Baronetage of the United Kingdom on 29 January 1958 for Harry Platt, Consultant Adviser in Orthopaedics to the Ministry of Health and President of the Royal College of Surgeons of England. He was succeeded by his son, the second Baronet. He never successfully proved his succession to the baronetcy and was never on the Official Roll of the Baronetage[1]. On his death in 1998 the title became extinct.
The Platt Baronetcy, of Grindleford in the County of Derby, was created in the Baronetage of the United Kingdom on 14 July 1959 for Robert Platt, President of the Royal College of Physicians, and one of the earliest physicians involved in the AIDS pandemic. In 1967 he was created a life peer as Baron Platt, of Grindleford in the County of Derby, in the Peerage of the United Kingdom. The barony became extinct on his death in 1978 while he was succeeded in the baronetcy by his son, the second Baronet. He was Professor of Music at Sydney University, Australia. As of 2010 the title is presumed to be held by his son, the third Baronet, who succeeded in 2000. However, as of 30 June 2006, he has not successfully proven his succession to the baronetcy and is therefore not on the Official Roll of the Baronetage. However, the case is under review by the Registrar of the Baronetage.[1]