I could not find any reference to Mike Morten's letter on mumsnet and I was struck by various resonances between the situation with the PIE's attempt to infiltrate the LGB movement back in the day and certain current events.
The photos of the actual letter are definitely worth reading and reflecting upon in the light of current events.
The letter appears as the first image of a document in the below Mail piece
www.dailymail.co.uk/news/article-2563377/Now-say-sorry-Ex-Yard-chief-calls-Labour-trio-admit-backing-paedophilia-huge-mistake.html
Interestingly the former police officer named in the article as Mike Hames, Scotland Yard’s Obscene Publication Squad, who is calling for the various politicians who helped the PIE to admit they made a mistake (a modest request surely?) has been recently been accused of being a satanic paedophile by the notorious fake police shistleblower Jon Wedger and his batshit sidekick the notorious anti-abortion campaigner and SRA conspiracy loon Wildfred Wong
The accusations start flying at 41 minutes in approximately and although Hames is not actually named, anyone familiar with the RAINS list and Hames' book The Dirty Squad will know exactly who he is.
We now live in a world where real cops and ex cops who oppose child sexual abuse are falsely accused of satanic child abuse by various controversial conspiracy theorists.
Anyway, check out the contents of the letter in the Mail article. I was there in the 80s and early 90s when this nonsense was happening in real time and I have a terrible feeling of deja vu.