was running armoured for power,
: phone, data etc., so
cheaper in DIY quantities,
Grateful for all the info guys. Mike, I did take your advice and went to get some coloured pipes to run the cable through, quite subconsciously I chose black!! - only to return to find a colour pipe frenzy in the thread ;-)
To be honest, now that I've read all the threads I'm glad I chose black as like Andy said, I intend moving house in about 5 years and wouldn't like to leave any nasty surprises for the new tenants!! - besides..... I'm trying to learn as much as possible as I go along and the whole 'this colour for this type' was new to me. My trench is now done (approx 400mm) and the warning tape etc is on order.
Thanks again to all who replied