Association of Professional Landscapers ( APL ) - Represents professional landscapers in Britain. Member companies abide by a code of conduct and you can find members at this site. - http://www.landscaper.org.uk/
A Guide to UK Paving Methods and Materials - Contains an illustrated coverage of paving and hard-landscaping methods and materials from AJ McCormack and Son, Warrington-based paving and draining specialists. - http://www.pavingexpert.com/
Landscape Design Trust - Information for landscape architects, architects, planners, ecologists, horticulturists, and all those interested in improving the physical environment in which they live or work; includes the Index of Practices from Landscape Design magazine. - http://www.landscape.co.uk/