@ItisIbeserk ‘I can't remember where I read it at the time of her last documentary/evidence reveal but the documents she talked about are not new knowledge to medieval historians.’
It appears that whilst historians may have known about the discovery of some of the documents at the time, they were not studied.
The documents featured in Phillipa Langley & Rob Rinder's documentary 'The Princes in the Tower: The New Evidence' (watch on YouTube, I cannot link, sorry) were:
The Gelderland Document
Discovered in the 1950s in the Gelderland Archives, Netherlands. Sent at the time to Dutch historian Prof. Diederick Enklaar at the University of Utrecht; who gave it scant interest. A witness statement written in the first-person recording Richard Duke of York’s story from the point at which he left sanctuary in Westminster as a 9-year-old boy in 1483.
The Lille Receipt for Weapons
‘In May 2020, Albert Jan de Rooij of the Dutch Research Group discovered in the archive of Lille a receipt belonging to King Maximilian I dated 16 December 1487. It references Margaret of Burgundy (Edward’s aunt). The receipt is signed by three leading members of Maximilian’s court and records the king’s collection of, and payment for, 400 pikes (weapons for elite troops). The weapons had been collected by Maximilian in June of that year. The receipt states that the weapons were: ‘to serve her nephew – son of King Edward, late her brother (may God save his soul), [who was] expelled from his dominion.’’
Dresden Archive
In February 2019, the Dutch Research Group rediscovered a pledge of payment by ‘Richard of England’ to Duke Albert of Saxony date 4th October 1493 in the Dresden Archive, Germany. The receipt pledge is for 30,000 florins signed by ‘Richard of England’ with his monogram and seal. It is also signed by 2 of his supported.
So much written evidence (which was authenticated by expert in the documentary) surely requires further consideration by experts, academics and other historians?