In "Bertrand Russell: The Philosopher-Englishman", https://tribunemag.co.uk/2023/05/bertrand-ar-russell-the-philosopher-en… (but first published in 1980: see Foot, Debts of Honour, B&R H233), Foot quotes from BR's letter to him. Here’s the context he offers:

“But let me set beside that masterpiece another burst of astringency. Just after that visit to Oxford recorded earlier I was engaged in organising an all-party anti-Nazi demonstration, and received the following from the Deudraeth Castle Hotel, in North Wales, on 14 November 1933:”.

In the same article Foot quotes whole the letter catalogued at record 60662.

There seems to be a misprint of "Tolley" for "Toller", i.e., Ernst Toller, who left Nazi Germany in 1933 and whom BR greatly admired.