I hold the CAA 'Permission for Commercial Operations' Licence (No 1659) UAV use.  I now tend to use this as an add-on to my day to day photography for a small extra fee. However I will only employ the technology if it is safe and practicable to do so and a full risk assessment has been undertaken. By law the maximum operating height is 400ft and not more then 500m away within visible line of sight.  I also employ the use of Bell Jet and twin engine Helicopter aircraft for the more complicated assignments.