Advice for course options for specialising in Psychotherapy?

I have a background in psychology, and completed a pg dip as a children's wellbeing practitioner. I'm currently working in the Mental Health Support team. My work consists of cbt for adolescents, parent led cbt to support younger children, and group work for primary school age children.

I am very interested in Psychotherapy, as I feel this supports clients in a more impactful way than cbt. I would LOVE to do the child and adolescent Psychotherapy Drpsych, but it requires a specific masters and I cannot justify adding to my student loan.

Does anyone have advice for nhs funded Psychotherapy pg dips? I would love to know where to go next!