rich p said:I also note that Dawes give their sizes as 49, 52, 55 whereas dealers give 52,55,60.
As I too am 5' 7" I had assumed the sizing was the same through the range i.e. my 51cm Dawes Audax would be close to the 52cm Ultra but from what you are saying Rich p it would appear not.

Plax, I've always used that guide of elbow against saddle. On mine I can just reach the bars and that works for me but it doesn't work for everyone. A few people, Fab Foodie for instance, uses a lay back seatpost as he has a longer back and hence more reach. I'm not sure about reversing the seatpost, I guess with the more relaxed geometry of the Ultra it might work if your knee is still in the right place on the pedalstroke and you 'feel' right.
Difficult to advise from a distance, especially if you are not used to riding drop bar bikes. At first it may well feel stretched but then as you get used to it, it will feel more natural. Do you remember Punky posting recently that her bike suddenly felt too small. She ended up dropping her bars and trying bar ends to stretch herself a bit.
Don't ride it. Evans have a returns policy. Sit down coldly and methodically and go through all the bike measurement setup to make sure it fits from the theoretical perspective. If it does, good, you can re-consider the comfort aspects and decide coldly if it 'feels' right. Exclude the feeling strange bit. If it doesn't, either get yourself to somewhere you can test ride one just to be certain or return it straight away. If you have any doubts, this is the time to dispel them, don't persevere with the bike if it isn't right. This might cause you some short term grief but better that than blowing your money on a bike that isn't quite right. Having said all that it might be fine, you just have to sit back and tick everything off the check list first.
I hope that helps, I've not really come down one way or the other and it is quite normal to get what the marketeers call 'post purchase dissonance', that's why it's important to go through it logically.
