Yes, I have (elements which can be spoken of around here):
Dedicated 6 gang (circuits) CU (MEM brand), which is fed ‘first’ from incoming supply (via Henley block). IIRC, I have 32amp fusing on the circuits, with board breaker of 100amps. These were largest ratings sparky could fit many years back.
The 6 are all 10mm cabled (cooker cable in general parlance). Fortunately, the CU is the other side of the wall to my living space and the wall where the natural place is for my kit.
Earthing has also been beefed up. All done by a sparks many year ago.
The 6 circuits feed 6 sockets as simple radials. AFAIK, it’s impossible to make a ‘ring circuit’ with 10mm cabling, as it’s too big for most terminals and a right bu**er to bend - it doesn’t!
BUT:
The CU only has one bus bar inside it so, as best I know, it doesn’t star-feed the circuits, like a good quality mains box does. In theory, circuit 1 gets the best voltage etc, etc,.
An alternative is to run the separate CU with only say 2 circuits and then use a star-wired/ring-wired (supply & earthing) distribution box (not cheap), with adequate sockets for the kit. It seems some think this is the better way to go for performance. Earthing can still be improved (getting a sparky on this is essential nowadays).
Also beware things like surge protection, which is now instilled in to regs. The use of this is supposed to be risk-assessed by the sparky, the primary drivers being the exposure of kit in the house to surges e.g. laptops/PCs/games consoles, which can be bricked this way. AIU, the power companies are trying to avoid claims for damaging kit sensitive to surges, the moreso as energy security threats loom(?).