Anglesey is perched right on the edge of the Irish Sea and boasts an impressive array of layouts, gradients and corners thanks to a complete re-design in 2007. It's a versatile and fun circuit with lots of variety for both novice and experienced drivers. 
 
The full International circuit with the Hairpin is great, but the slightly shorter Coastal circuit with the fantastic Corkscrew section, as used by TV's Fifth Gear, is most peoples favourite.

Being one of the most remote circuits in the UK, noise is not usually a problem.