"Jennifer Daniel is a posh Ophelia who fails to convince in the ‘mad’ scene. As Gertrude Patricia Jessel, who had been a regular at the Stratford Memorial Theatre since 1944, has a rather remarkable neck, but she falls short in the ‘closet’ scene. The best of other players is probably Sydney Tafler as Claudius, another criminal role to add to the actor’s tally in British noir films of the previous decade."This was thought lost for many years until a copy was found in the Library of Congress and returned to the BFI. For all John's reservations, let's hope an accessible edition (streaming perhaps since a home release seems unlikely) is made available soon.
On the Sceenplay's blog, John Wyver reports on the BFI screening of For Schools: Hamlet, the 1961 ITV series starring Barry Foster in the title role: