Need help fixing shelves securely in living room

I'm looking for a reliable handyman to install and secure a set of wall-mounted shelves in my living room. The walls are plaster and brick in parts, so you should be comfortable identifying studs and choosing appropriate wall anchors. The job includes marking precise levels, drilling where needed, and ensuring the shelves are stable and safe for everyday use. Some hardware will be provided, but please bring your own tools and any extra brackets or anchors you think are appropriate. Ideally, you can start in the late morning and complete the job in one session. If you have substantial experience with shelving installations in UK homes, I’d love to hear a brief note about your approach before you arrive.