Associated British Foods: The company is building a bioethanol plant in Norfolk that will process sugar beet into 55,000 tonnes of bioethanol each year, providing a sustainable energy source for more than one million cars.

Cadbury Schweppes: It reduced carbon emissions by 15% from 2000 to 2005. By 2010, it wants to be reliant on renewable energy, reduce carbon-based fuels and use 100% recoverable or biodegradable packaging.

Diageo: One per cent of operating profits have been committed to social investment and community projects.

Masterfoods: As part of a carbon-offsetting programme, is planting 40,000 trees at its pet nutrition facility in Waltham. It has reduced plastic used in chocolate bar wrapping by 2.5 million sq m a year.

Nestlé: The company has reduced its energy consumption per tonne of product by 12%, water consumption by 10% per tonne of product, and UK food miles by 135,000.

Northern Foods: With Unilever and Heinz, one of the first three manufacturers to sign the Courtauld Commitment to reduce packaging waste. It wants to reduce energy use by 5% a year over the next three years.

Procter & Gamble: P&G was the first to introduce concentrated products, refill packages and recycled plastic bottles, and has reduced packaging by 27% since 1990.

Reckitt Benckiser: It has planted more than two million trees to absorb more than one million tonnes of CO2 over the next 80 to 100 years.

Unilever: It finances the recovery of 61,000 tonnes of packaging waste and its suppliers recover a further 53,000.

Walkers: It introduced a carbon footprint label to its Cheese & Onion crisps and plans to roll it out to more products.