Decided to bite the bullet and just go for the Hikvision ones above and found a suitable NVR to go with it. Just need to buy a HDD to whack in it, buy a reel of outdoor ethernet and figure out the best way to run the cables for the camera positions. Would love to hide the cables but easiest will be to clip them onto brick.
Make sure the cameras and NVR are for the same region, a Chinese Hik camera and European Hik NVR isn't compatible.
Consider running the cables from the attic or under the floorboards, it's a much cleaner job in the long run
![Wink ;) ;)](/styles/default/xenforo/vbSmilies/Normal/wink.gif)