- Sir David Attenborough has expressed being "completely overwhelmed" by public messages ahead of his 100th birthday.
- The legendary broadcaster will celebrate his milestone birthday on Friday, 8 May.
- He plans to spend the day with close family before attending a live event in his honour at the Royal Albert Hall.
- In an audio message released on Thursday, Sir David thanked well-wishers, noting he had expected a quieter celebration.
- He extended his gratitude to everyone who wished him a special day, from primary school children to care home residents.
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