On Tuesday, 15 August 2017 19:06:33 UTC+1, Scott wrote:
You can always use a bit of 2.5 mm2 t&e if available.
I know, but my concern is it would create an impression the work was
not done by a real electrician, which is not the result I am trying to
achieve.

Obviously a real diyer goes to the shop for 2 metres of shiny new cable.

A real electrician would chuck in a piece from the scrap bucket on the van.

Owain