– Brian Blessed, speaking to BBC News
He had a tremendous knowledge of science.
He was child-like, and had a tremendous love of the universe, and astronomy.
Sad news. Gerry Anderson RIP. For men of my age his work made childhood an incredible place to be.
Jonathan Ross has paid tribute to Gerry Anderson on Twitter.
The chief executive of Alzheimer's Society has said that Gerry Anderson was an "outstanding supporter" of the charity.
Jeremy Hughes said:
– Jeremy Hughes, chief executive, Alzheimer's Society
Gerry Anderson has been an outstanding supporter of Alzheimer's Society and campaigner on behalf of people with dementia.
He was determined, despite his own recent diagnosis, to spend the last year of his life speaking out for others living with dementia to ensure their voices were heard and their lives improved.
With the support of his family, Gerry tirelessly attended events around the country to raise awareness of the condition and to raise funds for a cure.
Twitter users have been sharing their thoughts after the death of Thunderbirds creator Gerry Anderson.
@itvnews my sincere wishes to a brilliant man who created something before its time. RIP Gerry Anderson.
Gerry Anderson's son, Jamie Anderson, said he was "very sad" to announce the death of his father.
He confirmed he died peacefully in his sleep at midday today, after suffering mixed dementia in recent years.
A donation page dedicated to his memory and support of the Alzheimer's Society has been set up.
Gerry Anderson, creator of Thunderbirds and Captain Scarlet, has died at the age of 83.
The chairman of his fanclub, Nick Williams, said:
– Nick Williams, chairman of Fanderson
To those who met him Gerry was a quiet, unassuming but determined man.
His desire to make the best films he could drove him and his talented teams to innovate, take risks, and do everything necessary to produce quite inspirational works.
Gerry’s legacy is that he inspired so many people and continues to bring so much joy to so many millions of people around the world.
Gerry Anderson, creator of Thunderbirds, Captain Scarlet and Space 1999 has died today at the age of 83, his son has confirmed.