Thanks for the reply gareth29,
Just for info I removed the ABS sensor as there was some oxidation from the hub in the hub carrier and I wasn't happy scraping it off with the sensor in pace. The bolt had some corrosion on but came off easily and the sensor came off. Ive fitted the new hub with no problems, ABS working fine with no lights. If you do this don't forget to put the little plastic cover that protects the ABS sensor in first before you put the brake dust shield and hub on. I had to take it all off again because I forgot!
Lucky on the front at least no pullers or messing with bearings are required, the hub, stub axle and bearing are all one unit held on by 4 bolts.