B&Q supports local community groups through a scheme called B&Q Community Reuse where stores work with community groups in their area to get unsellable materials and products reused. It is for registered charities, not-for-profit community groups and education establishments (including schools, colleges and pre-schools).
If you complete the form in the following link for your group, your details will also be added to the community reuse list. https://goo.gl/forms/zic1WrqfL5467QJ63