Kinesis Aithein and Aithein Disc
If you want a super fast bike for competition that weighs very little and is a very good value, then this is the bike for you. This frame is a scant 1200 grams for only £650. That's half the price compared to decent carbon that performs the same. You can get cheap carbon, but you'll be disappointed compared to this frame.
The paint on the black frame is shot-peened which is common on stems and bars. This means you get a matt black paintjob that is virtually unscratchable. An amazing finish that will look new for years. The gloss orange and green are standard paint, but still look very good. A complete bike will be around £1500, but you could make one up for £1200 if you wanted something worth upgrading later.