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Mark Durden-Smith
From Countdown
| Mark Durden-Smith | |
|---|---|
| Guest | |
 | |
| First appearance | 28 February 2011 |
| Last appearance | 16 January 2026 |
| Appearances | 20 |
| Episodes with Mark Durden-Smith | |
Mark Durden-Smith is a guest on Countdown. He's a TV presenter and is the son of TV legend, Judith Chalmers.
