Associated Newspapers owner Lord Rothermere has apologised in writing to Labour leader Ed Miliband for the conduct of journalists on the Mail on Sunday.

But he has not yet become drawn into the row over the Daily Mail's description of Miliband's late father Ralph as "the man who hated Britain".

Mail on Sunday editor Geordie Greig has apologised and suspended two journalists after a reporter approached a member of Miliband's family at a memorial service for his uncle Harry on Wednesday.