Ask the Collective
The questions independent drinks founders ask most — answered. Distilled from years of community knowledge so the good stuff never disappears in the feed again.
What are the UK regulations on bottle fill tolerances and declared volumes for duty and trading standards purposes?
Fill tolerance in the UK is split between two regulators. HMRC allows a 5% tolerance on duty calculations, which applies to the litres of pure alcohol (LPA) declared—there is no tolerance on the duty itself, only on allowable losses in production. Trading standards and local authorities enforce weights and measures under packaged goods regulations via gov.uk/weights-measures-and-packaging-the-law/packaged-goods. The key distinction is whether you pack to a minimum or an average: if you declare a minimum (e.g. "70cl minimum"), you cannot go under that figure; if you pack to average (marked with an epsilon symbol €), there is a tolerance up and down. However, if you knowingly overfill beyond the stated volume, you cannot claim tolerance—you must keep records of your fill process. Some members have successfully used 75cl bottles underfilled to 70cl equivalent for UK sale without issues from trading standards, provided filling records are maintained and inspections have cleared them. Industry data suggests beer has tighter tolerances (around 0.5%) and spirits around 0.3%, though these appear to be best-practice rather than hard regulatory ceilings.
What are the acceptable filling tolerances and compliance standards for 125ml canned products in the UK?
UK filling tolerances for 125ml cans are governed by the Weights and Measures Act 2006. Members report the following practical guidance: - **Tolerance range**: +/− 5g per can is typical for small-batch, manually-checked production, though each canning line operates differently—consult your co-packer on what their equipment can achieve. - **Statistical allowance**: For 125ml, one in 40 cans is permitted to be 4.5% short; effectively, no more than 9% of cans should fall below nominal fill. - **Average vs. minimum requirements**: Trading Standards require either an average of 125ml or just above across the batch (depending on your canner's method). Check with your specific co-packer whether they use average-fill or minimum-fill compliance. - **Revenue implications**: Avoid overfilling significantly; HMRC monitors for systematic overfill as it represents lost excise revenue on spirits and may trigger audit. - **Regulatory reference**: Consult the UK government guidance on Weights, Measures and Packaging at https://www.gov.uk/weights-measures-and-packaging-the-law/packaged-goods - **US comparison (FYI)**: The US tolerance is approximately +/− 2% of printed size, which is tighter than the UK allowance. **Caveats**: Each canning line has different capabilities; discuss feasibility directly with your co-packer before committing to a tolerance target.