Toby
If you just want a compact drill driver, with the emphasis on compact, have a look at the 10.8v Mafell A10M at around the £200 mark, read all the reviews and then check out the Metabo 10.8V PowerMaxx BS Quick Pro Cordless Drill/Driver with 2Ah and 4Ah batteries for £70 less. Unless of course you like the snazzy red paint job!
Mafell are a top-end power tool manufacturer with prices to match but their drills are all made for them by Metabo, painted red and marked up in price to reflect the name.
https://www.youtube.com/watch?v=cXgwc_FW674 gives a better idea of the features of the drill.
I have Festool, Fein and Metabo 18v drills, but the little Metabo is my go-to drill for 95% of the jobs I do. It is superb, the removable chuck makes it even more compact with its 1/4" hex spigot and the angle attachment is one of those accessories you never quite appreciate until you use it. It doesn't have a hammer action, is not an impact driver but as a compact screwdriver and drill which works round corners it is fantastic and knocks spots of my Festool CXS for performance and usability in tight places.
Although it is only 10.8v, the 2 and 4ah batteries deliver an impressive performance and it is remarkably powerful for its size. The bonus with Metabo is the 3 year warranty, batteries included, and I have steered clear of Makita drills after falling foul of the very poor battery life of the 18v batteries on the set I owned.
Always hard to recommend a particular brand or price bracket without knowing what your budget is or what you want it to do but I would recommend the little Metabo as a first class compact drill/driver. The set is around the £135 mark.
Pat