What address to send Sky Q boxes and remotes etc back to???

We have finally cancelled Sky Q and have 3 mini boxes, a Sky Q 2TB UHD box, all of the remotes and HDMI cables and power plugs.

They have send the packaging to send them back with, but there are 2 return address labels.
One label says:-
Unipart Sky Returns,
Unit 12 Hamilton Way,
Bemuda Park,
Nuneton.
VC10 7RL

The other says:-
Sky Returns,
Unipart Logistics,
National Distribution Centre, NDC
XX40 4UU

Has anyone else had the same??
They do not tell you anything about returns labels in the instructions, just to use Royal Mail.

Thanks.