According to The Independent Hawking has made a "heartfelt" tribute to the NHS in a short film to be broadcast on Wednesday.
Hawking was diagnosed with motor neurone disease at the age of 21.
He receives 24-hour care from three nurses.
They have to physically force his food down his throat (because his swallowing is impaired), bathe him and take a variety of measures to make sure he doesn't succumb to pressure sores or pneumonia. While he is still able to communicate, he's only able to do so at six words per minute.