John's symptoms started in 1999. He now has difficulty getting dressed and he is slower with walking, but he is grateful that his symptoms have progressed slowly.

Humphrey was able to continue working as a writer, broadcaster and musician after he was diagnosed. Although his Parkinson's was progressing fairly quickly he maintained a resolutely positive attitude, trying to solve each problem as it presented itself, such as voice recognition software when typing became difficult. He died unexpectedly of a heart attack in 2005.

• Parkinson's disease - 3-4 years since diagnosis