The �Princess� (sometimes known as �Princess Royal�) class was introduced in 1933. Designed by Sir William Stanier they were of class �8P� power classification and 13 were built. They were almost all named after princesses, although there was one �Lady�, one �Queen� and one �Duchess�. Number 46202 �Princess Anne� was destroyed in the 1952 Harrow rail disaster.
In 1937 an enlarged Stanier design known as the �Coronation� Class was introduced. These numbered 38 in total. They had larger cylinders and driving wheels (6�9� as opposed to 6�6� of the Princess class) and a slightly lower tractive effort (40,000lbs as opposed to 40,235lbs). They were named after Queens, Kings, Duchesses and Cities, though their designer was honoured with a loco named after him. Number 46262 �City of Glasgow� was also involved in the Harrow crash, but was repaired. These locomotives were streamlined, though the streamlining was removed in the mid 1950s and they revered to conventional appearance.
I have all the numbers and names in my 1961 Ian Allen "Combined Volume" of BR locomotives.