Bean & Wheat

The adjoining café to Adam Handling's The Frog Hoxton, which uses the restaurant's byproducts in its fresh dishes and sources from a network of sustainable London producers while also involving apprentices in sustainable hospitality qualifications.

321 Old Street, EC1V 9LE; beanandwheat.co.uk

Cafe from Crisis

A café run by the charity Crisis, which seeks to end homelessness through practical catering and barista training, while also sourcing from and connecting with like-minded ethical producers and businesses.

64 Commercial Street, E1 6LT; crisis.org.uk

Cafe in the Crypt

Set up by St Martin-in-the-Fields, this café supports the work done by the church in helping homeless or otherwise vulnerable people and refugees, with an emphasis on high-welfare sourcing and environmentalism.

St Martin-in-the-Fields, Trafalgar Square, WC2N 4JH; stmartin-in-the-fields.org

Central Street Cafe

An Old Street community café run in conjunction with St Luke's Trust, whose profits go towards food and services for elderly people in Islington, with a focus on sourcing sustainable, organic produce wherever possible.

90 Central Street, EC1V 8AB; centralstreetcafe.london

Change Please

A group of portable cafés and coffee bars, set up in stations, offices and trucks to train the homeless and support them with social integration, housing and logistical aid.

Various locations; changeplease.org

Clerkenwell Kitchen

A café with a top-to-bottom ethos revolving around careful, sustainable sourcing, linking up with producers and farmers in London and the surrounding counties.

27-31 Clerkenwell Close, EC1R 0AT; theclerkenwellkitchen.co.uk

Redemption Roasters

A Bloomsbury café that serves as the outpost for Redemption Roasters, a coffee roastery inside HMP Aylesbury, which trains current inmates in all aspects of speciality coffee and helps them into work upon release.

84b Lamb's Conduit Street, WC1N 3LR; redemptionroasters.com

Social Pantry Cafe

A café in Battersea run by catering company Social Pantry, which works with charity Key4Life to help get ex-offenders back in work, as well as sourcing with producers including Bad Boys Bakery in HMP Brixton.

170A Lavender Hill, SW11 5TG; socialpantry.co.uk

Old Spike Roastery

A roastery and café on Peckham Rye that donates profits to causes aiming to end homelessness in the capital, as well as offering employment opportunities for homeless and vulnerable people.

54 Peckham Rye, SE15 4JR; oldspikeroastery.com

Teatulia

A tea room in the day and cocktail bar in the evening, serving single-estate, organic teas from a co-operative in the Teatulia region in Bangladesh, supporting local growers to improve literacy in the area.

36 Neal Street, WC2H 9PS; teatuliabar.com