Rita Tushingham is so great!
This was her film debut and is an important film (#56 on the BFI top 100). So authentic as it's filmed in early '60s England. Rita was from Liverpool as is obvious from her accent, and she knew the Beatles of course:
https://www.pinterest.com/pin/133067363974296574/
I think the Scouser accent is my favorite in the world! Rita went onto worldwide fame in the '60s with Girl with Green Eyes, The Knack, and of course Doctor Zhivago, but then seemed to go away, but she's been acting up to the present!