In reply to Lauren Davies:
It depends what cover you want really, if it's just theft, then putting it on a contents policy will probably be the cheapest method, but as you say will cause premium hikes if you do have it stolen.
Protect your Bubble etc offer much higher levels of cover - crash damage, theft, bodily injury, breakdown!, european cover etc. This is who I use for my carbon Steads. (it is pricy, but also piece of mind if I stack it badly)