Ed Miliband said:
"Frank is one of parliament’s finest and he will be sorely missed. On behalf of the Labour Party I would like to thank him for his dedication, strong sense of social justice and his years of service to our party and our country.
"Throughout his 35 years in parliament he has fought for many causes, most notably our NHS, including his time as Labour’s first health secretary for 18 years, but he has always put the people of Holborn and St Pancras first.
"I will miss his friendship, his wise words and his sense of humour.
"We wish Frank the very best."