Just as important, we want to preserve our garden space in its green, leafy and flowering form. In particular we want trees to grow and thrive and they simply can't do that in thin soil that's principal purpose is to cover over a dwelling space.
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Tencho Hristov ignored warnings and got trapped between barriers at Roydon in Essex.
The 6km bike track will include 130m of the South Circular near Kew Bridge.
The unfortunate officer was taken to a central London hospital for treatment and his condition is not life-threatening.