So far autumn temperatures are holding up well, but we might have a
shockingly cold December like last year, so once again it will be a
worry that the pipes in the loft will freeze.

So how about a tube heater? Are they safe to leave unattended? I read
on Amazon that they have to be mounted on a wall, but there's no wall
within feet of the pipes in question, so what would I mount one on?
What wattage would I need for a smallish loft (2004-built 3-bed
detached), 60W enough?

How about instead moving one of my oil-filled rads up there
temporarily? I've got a baby one that even has a thermostat on (the
tube heaters appear to need an extra thermostat).

MM