The chief executive of Alzheimer's Society has said that Gerry Anderson was an "outstanding supporter" of the charity.
Jeremy Hughes said:
Twitter users have been sharing their thoughts after the death of Thunderbirds creator 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:
Gerry Anderson, creator of Thunderbirds, Captain Scarlet and Space 1999 has died today at the age of 83, his son has confirmed.