The honest answer, the law it comes from, and what a drone can actually do on your farm today.
Yes. A drone can legally apply fertiliser, biostimulants, seed and water-based products today, and map your fields down to the individual plant. That is most of what a farmer actually wants from a drone, and it is all available right now. The one exception is pesticides, which we come to next.
The one exception is pesticides. Applying plant protection products from the air, so fungicides, insecticides and herbicides, is treated in law as aerial spraying, and that is not commercially permitted in the UK to anyone yet, only under a handful of trial permits. So if you need those specific products applied by drone, the answer today is no. Everything else, yes.
The governing law is the Plant Protection Products (Sustainable Use) Regulations 2012. It prohibits applying plant protection products from the air, with one route around it: a permit issued by the Health and Safety Executive, for operations carried out under an approved Application Plan. The detail sits in Regulations 15 and 16 and Schedule 2.
The important part for farmers is what counts as "from the air". The legislation is written around the act of applying pesticide aerially, not around the size or type of the aircraft doing it. A drone therefore comes within the legal definition of aerial spraying and inherits the whole framework, one originally built for helicopters and fixed-wing crop sprayers.
That is why a 70kg agricultural drone is regulated like a Piper Pawnee rather than like a knapsack sprayer, and it is the single point most of the confusion comes from.
HSE guidance states that there are currently no commercial authorisations permitting the application of pesticides by drone in the UK. A limited number of Extrapolated Trials Permits have been issued, and their purpose is to generate the data needed to support future applications rather than to provide a commercial service.
So the position today is not "difficult" or "a grey area". It is that the commercial permission does not yet exist. Anyone telling you otherwise should be able to produce the paperwork.
This trips up almost everybody, including people selling the service. There are two separate approvals and holding one tells you nothing about the other.
Whether you may operate the aircraft at all: pilot competence, operational authorisation, and for a machine the size of an agricultural drone, a proper safety case. This is about aviation risk, not about chemicals.
Whether you may apply a given product from the air. This is where the plant protection product prohibition and the permit requirement sit. A CAA authorisation grants nothing here.
An operator can be entirely legitimate in the air and still have no permission whatsoever to spray your crop. If someone shows you a CAA authorisation when you ask about pesticide, they have answered a different question from the one you asked.
Plenty, and this is the part that gets lost in the argument about spraying. None of the following are plant protection products, so none of them are caught by the aerial application rules.
Regardless of who is offering it, or how it is described.
Put another way: the drone cannot yet replace your sprayer, but it can already do the establishment, nutrition and monitoring work, and it can do all of it on ground that will not carry a machine. And where you do need a plant protection product on, we can build the variable rate map that tells your own sprayer exactly where to put it.
The trials permits exist for a reason. Regulators are not trying to keep drones out of British fields permanently, they are waiting for evidence on drift, deposition and operator safety that meets the standard already applied to every other method of application.
We are part of that. HarvestHawk is speaking directly with HSE, has written to MPs and farming ministers, and runs Hawk Greener Growing, a farmer-led programme building real-world evidence on what precision drone application actually achieves. The case for changing the rules is made with data, not with press releases.
What we will not do is give you a date. There isn't a published one, and any contractor offering you a timeline for drone pesticide approval in the UK is guessing at something that is not theirs to decide.
Why we have written this. Every contractor selling drone spraying has a commercial reason to leave this question fuzzy. We would rather you knew exactly where the line sits, including the part where it means we have to turn work down. You can read our full position on our compliance page.
Yes, for most of the work farmers want. A drone can legally apply liquid and granular fertiliser, biostimulants, foliar feeds, seed for cover crops and reseeding, and water-based products, and it can map your fields in fine detail. The single exception is plant protection products: fungicides, insecticides and herbicides cannot be applied from the air commercially in the UK yet, only under trial permits. So for everything but pesticides, yes.
No, not on ordinary commercial terms. Applying plant protection products from a drone is treated in law as aerial spraying, which is prohibited unless the operator holds a permit from HSE and works to an approved Application Plan. HSE guidance states there are currently no commercial authorisations for pesticide application by drone in the UK.
Anything that is not a plant protection product. That covers liquid and granular fertilisers, biostimulants and foliar feeds, seed for cover crops, grass reseeding and wildflower mixes, non-PPP slug pellets and water-based products. None of these are caught by the aerial spraying rules.
Because the law is written around applying pesticide from the air rather than around the size of the aircraft. A drone comes within the legal definition of aerial spraying, so it inherits the same framework built for helicopters and fixed-wing aircraft, including the permit requirement.
Ask to see the permit. A legitimate aerial application of a plant protection product requires an HSE permit and an approved Application Plan, and a small number of Extrapolated Trials Permits exist for generating data. If a contractor cannot show you the paperwork for the specific product and situation, take the advert at face value at your own risk.
The application has to be lawful, and it is your crop and your records. Ask the same questions you would of any contractor: what is being applied, under what authorisation, and what records will you be given afterwards.
The direction of travel is towards permitting drone application where the evidence supports it, and trials permits exist precisely to build that evidence. There is no published date, and anybody offering you one is guessing.
Crop mapping now, with seeding, spreading and nutrition expected from late October 2026. Free, no-obligation quote for your exact fields.