From the CAA's sitehttps://www.caa.co.uk/Commercial-industry/Aircraft/Unmanned-aircraft/Guidance-on-operating-permissions-for-drones/
Gutter clearing Inspections: In this film Rich Atkin demonstrates a new toy, the Phantom 4. Now the Phantom 4 is an extremely expensive kit, weighing in at £1440... and that does not include the tablet of which you have to buy yourself separately... but technology is getting cheaper and the drones are getting even smaller. The question open to debate here is; Can drones assist with gutter inspections for your window cleaning business?https://youtu.be/gw5Ww-ere-4
How complicated can you make such a simple task!