The shocking environmental effect of fast fashion has been laid bare by a new campaign.

In the average UK household, nearly a third of clothes worth over £1,000 haven’t been worn in the last year.

That’s £30 billion of clothes in total.

Meanwhile, more than 5 per cent of the UK’s annual carbon and water footprints come from the manufacturing and buying of new clothes.

Fast fashion is still very popular and clothes are generally only being kept and worn for a couple of years.

If clothes were kept and worn for nine months longer, this would reduce the carbon, water and waste footprints of our clothes by up to 30 per cent.

To tackle this issue head-on, North London Waste Authority has commissioned Keep Britain Tidy to bring its fourth series of free ‘Swish and Style’ clothes swapping and repair events to a number of boroughs.

These events will provide people who live, work or study in north London a free opportunity to refresh their wardrobes and learn more about the impact of textile waste.

Councillor Clyde Loakes, chairman of the authority, said: “An estimated £140 million worth of used clothing is thrown away in the UK every year.

"Our Swish and Style events are fun, free and help to reduce the environmental impact of buying new clothing by reducing the amount of old clothes that get thrown away.

"By providing the tools and knowledge to help everyone think about reusing and repairing textiles in an interesting way we’re hoping local community groups and residents will get excited about swishing.”

The events will take place in the seven north London boroughs of Barnet, Camden, Enfield, Hackney, Haringey, Islington and Waltham Forest.

Over 230 residents ‘swished’ more than 1,600 items of clothing at the last four events, with three more events coming up.

Next NLWA and Keep Britain Tidy will welcome Waltham Forest residents on Saturday February 23 at St Mary Magdalene Church Hall in Enfield, EN2 7AJ.

Doors will open at 3pm with last entry at 5.30pm.

See the full event schedule and all upcoming events on wiseuptowaste.org.uk/swishandstyle.

Attendees can take part in a range of clothes upcycling workshops, learning how to turn otherwise unwearable clothes and scraps into useful and beautiful items.

In addition, a free minor alterations service will be available throughout the afternoon, offering quick repairs and alterations on a first-come, first-served basis. Delicious cupcakes and refreshments will also be served.

No prior registration is necessary to attend the free Swish and Style events, but the events are only open to the people that live, work or study in one of the seven north London boroughs.

For joining instructions and more details please visit wiseuptowaste.org.uk/swishandstyle