R codes and D codes for waste: recovery and disposal operations explained

Every waste movement in the UK must declare what will happen to the waste at its destination. R codes and D codes are the standardised shorthand for that answer — they classify whether waste is being recovered or finally disposed of, and they appear on every waste record from a transfer note to a DEFRA digital submission.

What are R codes and D codes in waste management?

The letter prefix tells you which way the waste goes. An R code means the waste re-enters productive use in some form — as fuel, as recycled material, as compost or as recovered oil. A D code means the waste is permanently discarded: buried, incinerated without energy recovery, or held pending final disposal. The waste hierarchy places every R code above every D code, so when a site can recover waste it should, and the code on the record proves it did.

What do the R codes (R1 to R13) mean?

R12 and R13 are intermediate recovery codes — they cover pre-treatment or sorting and temporary storage before a final recovery operation, not the recovery itself. A transfer station that bulks up materials before sending them to a recycler typically carries R13 (storage pending recovery) or R12 (pre-treatment before recovery). The downstream recycler carries R3, R4 or R5.

What do the D codes (D1 to D15) mean?

D8 and D9 cover biological or chemical treatment that itself leads to final disposal rather than recovery. D13, D14 and D15 are intermediate disposal codes — blending, repackaging and storage before final disposal — equivalent to R12 and R13 on the recovery side.

Is an R code better than a D code under the waste hierarchy?

Under the waste hierarchy (Regulation 12 of the Waste (England and Wales) Regulations 2011), recovery (R codes) must be prioritised over disposal (D codes). Operators must apply the hierarchy in order and can only choose disposal when no viable recovery option exists.

Regulators examine the code on your records to check compliance with the hierarchy. Operators that default to disposal when a recovery route is available may face scrutiny at inspection. Choosing the correct code also matters for Digital Waste Tracking, where the R or D code is visible to the Environment Agency in near real time.

Do R and D codes appear on waste transfer notes and consignment notes?

The code records what the receiving site intends to do with the waste. A skip-hire firm delivering mixed construction waste to a transfer station would typically record R13 (storage pending recovery) or R12 (pre-treatment). That transfer station, on sending sorted aggregate to a recycler, records R5 (recycling of inorganic materials). The chain of codes traces the waste's intended route through the system and lets regulators verify the hierarchy is being applied.

Are R and D codes required for Digital Waste Tracking submissions?

Digital Waste Tracking becomes mandatory for permitted and licensed waste receivers in England and Wales from 1 October 2026, and in Scotland from January 2027. Each receipt must be submitted within two working days of the waste arriving. The R or D code is validated on submission alongside the EWC codes, the carrier registration and the quantity — so the correct code needs to be identified at the point of receipt, not added later.

How do you choose the right R or D code for your operation?

• →Energy from waste (EfW): R1 — the waste is used principally as fuel to generate energy.
• →Composting or anaerobic digestion: R3 — organic substances not used as solvents are recycled by biological transformation.
• →Metal recycling or scrap processing: R4 — metals and metal compounds are recycled or reclaimed.
• →Aggregate recycling or inert fill: R5 — other inorganic materials such as glass, concrete and ceramics are recycled or reclaimed.
• →Transfer station (bulking before recycler): R13 (storage pending recovery) or R12 (pre-treatment before recovery).
• →Landfill: D1 — waste is deposited into or onto land.
• →Incineration without energy recovery: D10.
• →Treatment before landfill: D8 (biological) or D9 (physico-chemical) followed by D1.

If your site's environmental permit or waste management licence lists specific permitted operations, the code you record must match those permitted activities. Use your permit or licence as the primary reference.

This guide is general information about waste recovery and disposal codes, not legal advice. Check your obligations against the primary sources below and, where you are uncertain about the correct code for your operation, consult your environmental regulator.