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Is the only technology donation programme in the UK. It provides savings of up to 92-96% on a wide range of products from world-leading technology companies. Giveing eligible UK charities access to major technology companies' donation programmes, including Microsoft, Cisco, Symantec and Adobe.

You can read more about tt-exchange here 

Office 365 Nonprofit Plans and Pricing

Qualified nonprofits can receive Office 365 Nonprofit as a donation or upgrade to advanced features at a significant discount. To qualify for Office 365 Nonprofit, 
you must hold recognised charitable status and sign Microsoft’s non-discrimination policy. Infomation on signing up can be found here , and find plans and pricing information here