M&S will form part of a 600 strong IT team, and other companies involved in the project include Microsoft, Cognizant and SAP.
The volunteers will work on four projects: One is to help 200 Abbeyfield care home residents to use Google, Facebook and Twitter on laptops, iPads and iPhones to reconnect with their past.
Other volunteers will plant 10,000 trees in Heartwood Forest with the Woodland Trust and volunteers from the Prince’s Trust.
And 110 IT executives will become ambassadors in conjunction with educational charity STEMNET with the aim to help youngsters understand the importance of IT. The ambassadors will visit 15 schools to promote IT, with the event organised by M&S and Tata.