Read that he was offered elocution lessons which he turned down on the basis it was difficult enough playing someone he is not without speaking in a way he is not.
A great loss to the acting profession. Always enjoyed anything he did really. RIP. He was a local lad to me when I was a kid (not that I knew him), I knew and still know lot's of people that speak with that oh so familiar North London accent.
Apparently he was to play Al Capone in The Untouchables and had been promised the role until they decided to get Robert De Niro instead, so they sent him £20,000 in compensation to which he replied any time you dont want me to be in your films I'm your man
Planning is an unnatural process, much better to just get on with things, that way failure comes as a complete surprise instead of being preceeded by a period of worry and doubt