http://www.evanscycles.com/products/pinnacle/sentinal-20-2010-road-bike-ec021918#features
Having looked at the Spesh Allez 16, this seemed like a better option as it has tiagra groupset, your thoughts? It's also £250 so seems a bargain.
* £250 off not £250 total
Road and Mountain bikes are completely different. It sounds like you want a hybrid, like a mixture of the two, they are softer and more forgiving than a road bike but not as chunky or heavy as a road one, check out Specialized or Scott hybrids.