Drone Surveys & Aerial Inspection Imagery in Bristol

This is the part of a Bristol job that takes the most thought, and it is worth understanding before you brief anybody. There are three things that decide whether a flight happens: the airport zone, the built-up nature of the city, and whatever temporary restrictions are in force that day.

Bristol Airport's Flight Restriction Zone

Bristol Airport sits south west of the city, and like most UK airports it has a Flight Restriction Zone around it. Inside that zone a drone cannot legally be flown without permission from the airport, whatever the drone weighs. In practice this affects work in the southern approaches to the city and the villages out towards the airport far more than it affects central or north Bristol, but the honest answer for any given address is that it has to be checked rather than assumed. I check each site against the current published airspace restrictions before quoting, because the geo-awareness data built into a drone can be out of date and is not a substitute for that check.

Flying in a congested city

Central Bristol, the harbourside and the residential terraces all count as built-up areas under the CAA rules, and this is where the aircraft matters. A heavier drone has to stay 150m clear of residential, commercial, recreational and industrial areas and 50m from uninvolved people, which would rule out most of the city. I fly a sub-249g DJI Mini 5 Pro, and drones under 250g are permitted to fly in those areas and closer to uninvolved people, which is what makes photographing a Redland roof or a harbourside elevation legal at all. The limit that never moves is crowds: no drone of any size is flown over an assembly of people. Height is capped at 120m above the surface, and I keep the aircraft in sight throughout.

Event days and temporary restrictions

Bristol has a busy events calendar, and events change the airspace picture temporarily rather than permanently. Large gatherings and displays are commonly covered by short-notice restrictions and safety notices to airmen, and the balloon fiesta period is the obvious example of a time when there is a great deal of low-level aviation over the city and its northern fringe. My habit is to check current notices for the date as well as the map, because short-notice restrictions do not always appear on the standard zone map, and to move a flight by a day rather than fly into a busy piece of sky.

Ground-level permissions

Airspace is only half of it. I still need the landowner's permission for the spot I take off and land from, which in central Bristol often means a private yard, a garden or a flat roof rather than a pavement. Some public land is covered by council byelaws that restrict drone take-off regardless of the airspace above it. Where a site is genuinely awkward, the fix is usually a different launch point rather than a different service, and that is a conversation I would rather have before the booking than on the day.