#24 - Leyland Tiger Cub PSUC 1/2 date probably c.1955
#30 - AEC Regal - date c.1934?
#33 - body may be British Trailer (they specialised in articulated bus bodies at that time)
Sorry woodinsight, but in the immortal words of Mrs Thatcher, "No, no, no"!
#24 is not a Tiger Cub but you're not far out with the date;
#30 is an AEC Regal as already established but again you're a year out with the date..
#33 is not British bodied!