Well, there's a lot of variation within road bikes. There's race bikes, which have you sitting quite far forward on the bike in an attempt to get the most aerodynamic position possible. This might not be the best choice if you're not already used to a road bike position as it can take a bit of flexibility and core strength to maintain for long periods of time. There's endurance/sportive bikes, which are more relaxed and designed to be comfortable when spending lots of hours in the saddle. There's some in between. There's cross/adventure/gravel bikes, which have the drop bars and riding position of a road bike, but the wide tyre clearance of a hybrid which makes it more comfortable, better at handling extra weight if you needed to carry stuff for commuting or touring and better able to handle off road tracks and such.
Most of these options might come with disc brakes, which have more stopping power and more consistent performance in the wet but they're harder to maintain by yourself. Groupset wise, I'd say for the money you should probably looking at Tiagra as a minimum. Others will probably say 105, but Tiagra was updated this year and it's now very similar in quality to 105, the main difference is that it's 10 speed vs 11 speed.
A few picks:
http://www.hargrovescycles.co.uk/bikes/road-bikes/cannondale-synapse-alloy-105-2016-road-bike.html - well regarded endurance frame, but it is a lot of money for honestly not the best disc brakes.
http://www.hargrovescycles.co.uk/bi...dale-synapse-alloy-tiagra-2016-road-bike.html - probably a better deal on a Synapse
http://www.hargrovescycles.co.uk/bi...ed-allez-elite-dsw-orange-2016-road-bike.html - kind of an "in between" geometry, highly engineered alu frame that's probably competitive with low end carbon. Also in grey.
http://www.hargrovescycles.co.uk/bikes/road-bikes/cannondale-caad-8-105-2016-road-bike.html - a bit more of a race bike, but quite a relaxed one, some people seem to find it more comfortable than the Synapse
http://www.hargrovescycles.co.uk/bikes/road-bikes/scott-speedster-20-2016-road-bike.html - fairly aggressive geometry, but fast and well proven frame
http://www.hargrovescycles.co.uk/bikes/road-bikes/ridley-x-bow-10-disc-2016-cyclocross-bike.html - good price for a cross bike from one of the biggest names in the industry, not the lightest but 105, TRP Spyre brakes which are probably the best mechanical discs around and good quality wheels, which likely make much more of a noticable difference