Founded in 2008. The Landscape Juice Network (LJN) is the largest and fastest growing professional landscaping and horticultural association in the United Kingdom.
LJN's professional business forum is unrivalled and open to anyone within within the UK landscape industry
LJN's Business Objectives Group (BOG) is for any Pro serious about building their business.
For the researching visitor there's a wealth of landscaping ideas, garden design ideas, lawn advice tips and advice about garden maintenance.

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I had a client that went with PIC. The issue came when the gas board needed to dig some of it up. She was quoted over £1k for the landscaper to come back to repair it using the moulds. Both have pros and cons but I would stay with blocks.