There have been recent trials for Peanut Immunothearpy, which have been quite successful. Sublingual Immunotherapy for Peanuts is also being trailled and if successful, will be veru useful, as many children who are allergic to Peanuts, do not want to eat Peanut for the desensitisation.

https://www.evelinalondon.nhs.uk/about-us/news-events/2018-news/20181119-landmark-study-peanut-allergy.aspx

Currently, the only clinic that I can find offering Immunotherapy for Peanut is at Addenbrooks Hospital, Cambrodge.

http://www.peanut.cuh.org.uk/