In reply to Indy:
Yeah that's what I went for and paid £122 as I paid by MasterCard for the extra £5 as will clear it next month. A bit of a bargain. Think it can be picked up sub £200, but on wiggle I know it's £211. Just need to get specific mounts for it but will wait for it to arrive before committing to which ones.
Hopefully get to use it in the near future and test it out. I know it links with my Garmin Edge 800 so I can turn it on and off via that to make it a bit more interesting when MTB as no one wants to hear me huffing and puffing going up inclines!