Computer Repair Shop

Hi All,
My partner is having some issues with his self built PC, he’s pretty good with it all but needs some professional guidance/repair. Is there a good “old fashioned” PC repair shop around that anyone can recommend? Ideally a local independent please!

I’ve not used them, but I’ve seen https://revivemydevice.com/ who are located in Brockley recommended elsewhere before. They have a FB page also, not sure on their opening hours now (or if they are open during lockdown, best to call).