Very sad to see Leon Brittan has died. A good & honourable servant of his country. A decent and lasting friend. He will be sorely missed RIP

— John Deben (@lorddeben) January 22, 2015

Sources indicate John Gummer is correct.

CONFIRMED:

“Former Home Secretary Leon Brittan died last night at his home in London after a long battle with cancer.” – Family statement

Leon Brittan family statement pic.twitter.com/5TOLhPLXVO

— John Stevens (@johnestevens) January 22, 2015