Best cyclocross bike under £1000 and other CX chat

The problem is that I want cross compatibility with my wheels and groupset from my roadbike which is campag, and I also want to use the ride to work scheme which limits me to £1k spend. I could source and build a bike for under £1k with the spec I want but it wouldn't be under £1k and wouldn't meet r2w eligibility.

OTP stuff is such rip-off junk. Maybe I could find a shop who would see there way to order a discounted Campag group as part of the build if I bought their frame and build services and bring it all under r2w. If anyone has succeeded with a plan like this, let me know.

Smallfury - thanks for the links.

Things have become much more lax with c2w recently- I've been offered a groupset on c2w- they said they'd just put "Shimano Ultegra Di2 bike" on the form.

So I'm sure you could get a rolling chassis, or just some wheels.