Dover’s Hill is lovely if you’re sitting at the top and enjoying the view from the National Trust viewing area.
If you’re trying to climb it on your bike, it’s another matter entirely, as I know to my cost! The road sign may say 14% but your Garmin will read higher than that. 
Kamila Leska gave it a go the other day and made it look so easy. Sit back and enjoy this lovely film about how she got on: Kamila climbs Dovers Hill – YouTube
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