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Oldershaw Group
The 1.4MW solar array at Moulton, rows of panels across the fen

Sustainability

We are a third-generation family business. We grow, source and pack onions, garlic and shallots, and nothing else. That focus runs three generations deep, and it means we think in decades, not quarters.

95%+

Cut in waste to landfill since 2017

1.4MW

Solar array at Moulton, live 2024

18%

Of site electricity from our own solar, 2025

2018

Reporting to WRAP food waste roadmap since

01 / Energy

In 2024 we switched on a 1.4MW solar array at our Moulton site. In its first full year it supplied around 18% of the site's electricity. The rest we buy on a REGO-backed renewable tariff, and we keep chipping away at demand through LED lighting, smarter refrigeration controls and demand-side response.

Red onions curing in windrows in the field before harvest

CLOSED LOOP / COMPOST RETURNED TO FARMLAND

02 / Waste

We have cut the waste we send to landfill by more than 95% since 2017, from 120 tonnes to just one. We handle around 10,000 tonnes of onion waste a year, and virtually everything finds a use, whether that is food manufacturing, animal feed or other processing routes. Only genuinely rotten onions and peel go to our own purpose-built composting facility, and the compost is spread back on the farmland that grew the crop. A closed loop, on our doorstep.

We have reported into the WRAP Food Waste Reduction Roadmap every year since 2018, because you cannot cut what you do not measure, and we are a signatory to the WRAP Courtauld 2030 Commitment.

03 / Water

Onions need water. So does the land around them, and the communities that depend on the same catchments. We built our own on-site reservoir to harvest rainwater and reduce our draw on local water sources, and we sit on the steering committee of the Norfolk and Cambridge Water Stewardship Group, working alongside other land managers to protect catchment health in one of the UK's most water-stressed agricultural regions.

04 / Packaging

We were the first UK supplier to introduce paper packaging for supermarket onions, launching paper-packed pickling onions with Waitrose. We are a member of the UK Plastics Pact and are committed to reducing unnecessary packaging and improving recyclability, while making responsible trade-offs between material reduction and food waste. Protecting shelf life is part of the sustainability equation too.

05 / The farms behind the crop

More than 80 growers

Every UK grower we contract is Red Tractor or GLOBALG.A.P. certified, most hold LEAF Marque, and we are working to make LEAF Marque universal across our contracted UK base by 2028. On the farms we visit we see solar arrays, anaerobic digestion, reduced cultivation and decades-long soil-health work. Our job is to measure it properly and give those growers the credit the data supports.

06 / Carbon

Numbers we can stand behind

We report our emissions under SECR and are extending that work into our supply chain, which is where the vast majority of a fresh-produce footprint sits. We would rather publish numbers we can stand behind than headlines we cannot.

07 / Our community and research

340 people in the Fens

We employ around 340 people in the Lincolnshire Fens. We open our gates for Open Farm Sunday and a Schools Farming and Countryside Day, and we partner with Cranfield University and a national research consortium on the soil and disease challenges that will define the next generation of British onion growing. Our three-year Knowledge Transfer Partnership with Cranfield will track over 150 parameters from seed to shelf, including soil health, environmental data and storability.

Certifications and reporting

Certificates and documents
BRCGS Global Standard for Food Safety
LEAF Marque
Soil Association
Sedex

REF 01

BRCGS Global Standard for Food Safety

Our packhouse is certified to the BRCGS Global Standard for Food Safety, graded AA+.

REF 02

SECR

We report annually under Streamlined Energy and Carbon Reporting.

REF 03

Red Tractor / GLOBALG.A.P.

All our growers are certified to Red Tractor or GLOBALG.A.P.

REF 04

LEAF Marque

Most UK farms we source from hold LEAF Marque; we are working towards it across all contracted UK growers by 2028.

REF 05

Soil Association

Accredited to pack and process organic onions, shallots and garlic to Soil Association standards.

REF 06

Sedex / SMETA

Sedex member, with SMETA audits across the supply chain.

REF 07

Climate Change Agreement / ESOS

Signatory to the FDF Climate Change Agreement; ESOS Phase 3 completed.

What we are still working on

Our Scope 3 emissions have not yet been fully baselined. We do not have a validated science-based target in place. Nature and biodiversity metrics across our growing estate are in development.

We are not going to claim a destination we have not reached. But we are moving, with structure and intent, and we will report on progress as we make it.

Meet the growers behind the crop