Arments in Walworth, south London has been serving pie and mash to locals for more than a century. This is how they have adapted the business in a changing London. Subscribe to the Evening Standard: https://bit.ly/Subscribe-to-Evening-Standard for latest breaking news from the UK, US and around the world, plus podcasts and features. Evening Standard on socials: Check out our full video catalog: null Videos, daily editorial and more: https://www.standard.co.uk/ Like us on Facebook: https://www.fb.com/eveningstandard Follow us on Twitter: https://twitter.com/eveningstandard and Instagram: https://www.instagram.com/evening.standard