In reply to Guy Hurst:
Triban looks as if it will do the job for you.
Whatever you choose, make sure it has proper fittings and clearances for proper mudguards (not clip-ons) and a rear rack (2-point fixing on the seatstays, not a bracket onto the brake bridge). The Triban looks ok for these (note that you are limited to 28mm tyres if you fit guards but a good quality tyre will cover a variety of ground e.g. tracks, paths and the like).
I mention this as there don't seem to be lots of bikes that really meet these criteria, a lot compromise with things such as expecting you to use clips for the guards or by using the same fixing-point on the droputs for rack and guards which can be awkward. At one time you'd have had a wide choice of suitable bikes but the fashion for sportive bikes has maybe shrunk the market for Audax-type bikes. Even 'gravel bikes' (the other trend alonside sportive frames) don't quite hit the mark as a commuter/fast-road/all-rounder.
Get decent mudguards: SKS Chromoplastics are good. Good racks are made by Tubus (the standard, expensive but worth it) or Blackburn. It can take a while to properly fit and adjust mudguards and rack, if a shop does it for you then double-check that everything is done properly before you go out on your first spin. I'm not saying that it won't be done correctly but the mechanic may not be given quite as much time as they really need... Also, if a shop does the work, then get any of the bits and spare fittings that may come with the rack and guards.
Let us know what you go for.