Hi painter 1.
I believe they can be routed in same trench, they may have to be at different levels, the electric cables and data cables should be seperated. (not bunched together) but same trench I think the regs should be 150mm a part. But don't take it as gospel!
they can all be in the same trench, with the water lowest at about 900mm with 150mm between layers and the electric supply in ducts. Where they enter building must be in sleeve duct sealed against rodent entry.
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