Relocating radiator to fit a new Vertical designer one.

Hello, Please help me out! Thanks in advance

THE JOB:
I am removing a standard horizontal radiator, and moving the pipes 2m to the right to install a new vertical 'designer' radiator.

PIPES LOCATION:
The pipes in my house run 3" above the skirting board behind the plasterboard
(perfectly horizontal return pipe alligned above the flow) They are 10mm copper pipes.

PROBLEM:
My radiator and TRV valves are all 15mm and the house pipes are all 10mm. I don't have a pipe bender so want to work with 10mm plastic which I have lots spare in the garage.

QUESTION:
How do I plumb the pipes up into my radiator? What parts do I need to get the correct elbows etc. Please see the below link for photograph, and the other to see an example of the radiator fitted.



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id buy a roll of 10mm copper pipe and a reducing olive kit for the trv

You want your pipes exiting the wall exactly as your image.
You can use a reducing set or soldered end feed reducer. Some wall tracking needed and a small pipe bender to make it professional.

I'd bend those into place from where they sit. No cutting needed.
15mm will look better though exiting the wall and insulated.