Advice on where to buy a Linux compatible custom built PC (maybe pcspecialist.co.uk?)

Hi all,

I'd like some advice on where to buy a Linux ready (I was thinking of
Ubuntu-Kubuntu) custom built PC in the UK (delivery in London).
I did some research, and found efficientpc.co.uk, which sells Linux-
ready custom-built machines.
I think I like the catalogue of pcspecialist.co.uk more (comparable
prices, but more choice, including monitors: receiving everything in
one Saturday delivery would be very convenient for me) but they don't
support Linux in any way and have no clue about hardware
compatibility.

Would you know / recommend other vendors? Do you have any experience
with Efficientpc or Pcspecialist ?

Thanks!
.

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