Adnams of Southwold has partnered with glassmaker O-I to develop the UK’s lightest branded 500ml glass premium ale bottle. At 280g, it shaves a further 19g off the brand’s market-leading lightweight bottle, creating an additional annual carbon saving of 100 tonnes and removing 115 tonnes of glass from the waste stream. Adnams used the glass when it worked with O-I to launch a 299g bottle in 2007. The long-neck, lightweight pack has since helped regenerate the sector, which had grown to £490 million by the end of 2014. O-I’s designers and manufacturing personnel at Harlow shaved weight off while retaining the shape and height of Adnams bespoke bottles so there was no impact on filling equipment or tertiary packaging. The brewer is now moving production of all its bottled beers into the new container.