Tom Parker
The Wanted singer Tom died last year from a brain tumour at the age of 33.
"Ed is a very special man... my wife Kelsey and I are so grateful to him for his support. It meant the world."
The chart-topping singer died last month at the age of 33.
"You really took your place in the world and you are so loved."
The episode of the BBC quiz show was brought forward with the blessing of The Wanted star's family following his death earlier this week.
Stars such as Rylan, Susanna Reid and Martin Kemp also remembered Tom in posts praising the star.
“Our hearts are broken, Tom was the centre of our world and we can’t imagine life without his infectious smile and energetic presence," his wife Kelsey said.
"Today is a f***ing good day," the former Wanted singer wrote on Instagram.
Olly Murs, Max George and Rylan Clark-Neal were among those who sent messages of support.
The singer was told he has stage four glioblastoma after being admitted to hospital following a seizure during a family holiday.