Looking for help on building/upgrading high end gaming PC

[M5MarkM]

Hey all never looked in this part of PH before! I’m looking for some advice/a service provider for maintaining/building/updating a high end gaming PC. I used to have “a guy” but he seems to have disappeared off the face of the planet and I’m a complete technomong so need someone who can help upgrade/build new high end gaming PCs. Does anyone know of anyone or a company based Southampton way that can do call outs and assist with this sort of thing please?