The Boardman CX I can comment on - as I have one!
I find it a nice bike - not as happy on it as my carbon road beastie - but it's excellent for commuting. A rear rack can be fitted easily - so can a rear mudguard. You have to get "inventive" with the front mudguard. The CX has a large gap between the bottom of the fork and the tyre - so you normally end up having to "extend" this in some way to get the guard near the tyre. You also have to do some creative bending with the stay on the brake caliper side (there are topics on this forum that explain how). The only other thing I've found is some toe overlap (and I only have size 7 feet).
I put 28mm slicks on over the summer and probably only lose 1-2mph over my road bike - late autumn/winter I put on 35mm treaded tyres. The Apex kit is pretty bombproof.
Last thing - if you do get this change the tyres and the disc pads asap. Paper would give you better puncture protection than the Ritchey tyres and the standard pads are squealing nightmares.
Sounds like a bad review but it really is a good bike. Just a couple of cheap upgrades (£5 each forsemi metallic pads - disco brakes), and some semi decent tyres (£15 each - Spa cycles currently have deals) and you're set.
Join British Cycling - get your 10% off the
Halfords price and that'll pay for those minor upgrades.