As far as I know, R.D. Laing was not analyzed by Charles Rycroft. Laing was himself a psychiatrist and psychoanalyst, and he was associated with a group of therapists in London who were influenced by the ideas of the psychoanalyst and theorist Wilfred Bion. While Laing and Rycroft certainly had interactions and debates about psychoanalytic theory, it doesn't appear that they had a therapeutic relationship in which Rycroft analyzed Laing.
Cf
Rycroft was a consultant psychoanalyst at the Tavistock Clinic from 1956 until 1968, and for a period of time was an assistant editor of the International Journal of Psychoanalysis and a training analyst with Scottish psychologist R.D. Laing.
https://en.wikipedia.org/wiki/Charles_Rycroft#Publications
So, Wikipedia is wrong here.
