Royal Horticultural Society Gardening Matters series, No. 1 Front Gardens - Are we parking on our gardens? Do driveways cause flooding? Includes designs for front gardens with parking, and information on porous materials:
Greater London Authority - Grey to Green - A guide to community-led depaving projects
Royal Horticultural Society (RHS): Front Gardens: Design Inspiration
RHS Front Garden Planting Guide
Southwell Road, Lambeth, Community De-Pave Garden
London Wildlife Trusts Garden for a Living London campaign:
Greenspace Information for Greater London (GiGL) the capital's open space and biodiversity records centre - detailed information on London's wildlife, parks, nature reserves, gardens and other open spaces.