The following list is by no means complete. The bogie type code is generally cast into the sideframe, either top centre or, more commonly, top left. The code is generally a number preceded by "QR" but some of the older types have a different code pattern. The code is circled in the first photograph.
QR6A
QR9, one of the more common types
QR16, including its variants, another of the more common types
QR16A
QR16B
QR16D
QR17A
QR20A
QR22B
QR23A
QR24A
QR27A
QR29A
QR33
QR35
QR5A - a friction box bogie converted to take a package bearing
unknown - the code is difficult to decipher but might read QR20B
Further research by Arthur Robinson has shown this to be a QR20A bogie