Sustainability at Hamiltons Fish

A family-run business with a long-term commitment to doing things better.

At Hamiltons Fish, we’re not just passionate about seafood — we care deeply about where it comes from, how it’s caught, and the impact it has on the planet. As a family business rooted in the South West’s fishing heritage, we believe sustainability isn’t a trend — it’s a responsibility.

From supporting local day boats and responsible farms to reducing packaging and food waste, we’re always working to improve how we operate. Here’s how we’re making a difference:

Sustainably Caught & Responsibly Farmed

We source the majority of our seafood through Brixham Fish Market, prioritising day boats that land small, high-quality catches with smaller impact on the seabed. These vessels often work with scientists and regulators to improve net design and reduce bycatch.

Whenever possible, we choose line-caught fish, allowing non-target species to be released alive and avoiding damage to marine habitats.

We also stock MSC-certified Hake from independently audited sustainable fisheries, as well as ASC-certified Seabass and Seabream from farms that follow strict responsible aquaculture standards.

We never sell wild-caught salmon. Instead, we work exclusively with Loch Duart, a highly respected ethical salmon farm based in Scotland.

Smarter Packaging — No Polystyrene

In 2020, we became one of the first UK online fishmongers to completely eliminate polystyrene packaging.

Our nationwide deliveries now arrive in fully recyclable cardboard boxes, insulated with natural sheep’s wool. It’s biodegradable, reusable, and keeps your seafood fresh — without harming the planet.

We Only Buy to Order

We only purchase what we need each day based on our customer orders. This means less overbuying, fresher seafood, and dramatically reduced waste.

Any leftover preparation waste — such as bones or trimmings — is collected and sent to Andigestion, where it’s converted into renewable energy through anaerobic digestion. The by-product becomes fertiliser, returning nutrients to the land with nothing going to landfill.

Reducing Single-Use Plastics

We’ve already made significant changes to cut down on plastic. We phased out plastic carrier bags (previously over 50,000 used per year), switched to paper bags at pop-up stalls, and stopped offering single-portion packaging in 2023.

We also upgraded our vacuum pouches to a more eco-conscious 65-micron version. When we do local pop ups, we encourage customers to bring reusable containers.

Why We Trust Loch Duart Salmon

All of our salmon is sourced from Loch Duart, a Scottish farm known for its strong focus on ethics and sustainability.

They avoid antibiotics, hormones, and antifoulants; use natural parasite control like cleaner fish; keep lower stock densities for better fish welfare; and feed their salmon a carefully formulated, sustainable diet.

This ensures excellent flavour, high animal welfare, and a lower environmental impact.

Cutting Paper Waste

We’ve reduced our paper usage by more than 70% through several changes.

We replaced A4 integrated labels with smaller A5 versions, eliminated excess invoices, and moved to digital systems wherever possible. Since October 2022, all printed materials use half the paper we previously needed.

Looking Ahead

We know the seafood industry still faces major challenges — from overfishing and bycatch to habitat disruption. But we’re committed to improving every part of our process.

We’ll continue to source responsibly, reduce waste and emissions, support science-led solutions, and work only with partners who share our values.

By making thoughtful decisions now, we can help protect our oceans for the future.

Have more questions about how we work?

Visit our Frequently Asked Questions or get in touch — we’re always happy to chat about what we do and why it matters.