Installer won't move the existing point within same room..there is something like a £70 charge for that.. BUT they will put in extra points for multi room, OR if the room you want the services presently has no point.
If u run own cables then webro hd100 is only suitable cable that meets vm triple shielding standard. But no guarantee a vm engineer will use even though it exceeds vm standard... Depends on the day. Hd100 is not easily available in the shops but readily available on eBay in various lengths.
Sat and digital cable does work, but due to lack of 3rd layer shielding it doesn't meet vm spec.. So it gives engineer even more reason not to use, and any faults and vm have a reason to blame you.
So hd100 triple shielded cable exceeds vm spec and you can't go wrong with it.
Also need ppc-ex6 NT plus connectors if you put on your own connectors.. These are also on eBay, and exact same ones that vm use with a serrated nut, twist on f connectors which sky use are not really recommended.
But what I'd do is ask the engineer to leave a few extra meters as you are redecorating and want to put them under the floor. Then all you need to do is unscrew the f connector from the top of the isolator... Re-route cable under floor then reconnect after.
Likelihood is when you undo it will be hand tight, but retighten it with a spanner, so it's not too tight but not hand tight either.. Just slightly more.
Engineers went around cabinets a while ago tightening connections.. But most installers don't bother.. But it helps with signal loss and noise ao good practice.
That's what I did, then he left an extra 3 metres coiled up outside, I've since put it under the floor also so all the slack is hidden and I had plenty of spare
it's a bit of a temporary mess outside but it's to your benefit if re-routing it