Soldato
You could get a cannondale caad8. The Caad frames are very well regarded. £800 gets you a Caad 8 with tiagra which is very respectable, and leaves a bit of money for accessories.
While the cost of accessories can't be underestimated (you could quite easily spend £200 without even trying) i would still rather put the money into the bike. £999 will get you a caadx with discs, carbon forks and full 105.