Why Choose Keith Thomas
• 20 years of experience as a Senior Apple Support Specialist at Apple Computer UK HQ.
• Former Apple Computer UK Mac Support Specialist and Apple Authorised Service Provider background.
• Established and Independent since 2010 for on‑site Apple Support Service – no call centres, no outsourcing, no hardware repairs. Over 25,000+ Apple problems resolved. Unique on-site Apple Support Service. backed up with Independent Apple Telephone Support Assistance.
• Trusted by home users, small businesses, and professionals across London and the South East UK.• Clear, honest, software‑only support. No Hardware Repairs. Expert Apple Consultancy Service.
On‑site Apple Mac Support in London and the South East UK
What this page covers
This guide explains the real reasons a Mac runs slowly, the steps you can try yourself, and when it’s time to get professional on‑site help. It applies to:
• MacBook Air
• MacBook Pro
• iMac
• Mac mini
• Mac Studio
If your Mac feels slow, freezes, takes ages to open apps, or shows the spinning wheel frequently, this page is for you.
The most common reasons a Mac runs slowly
These are the issues that Keith Thomas identifies most often during on‑site visits:
• Low free disk space
• Too many apps running in the background
• Outdated macOS version
• Damaged or bloated user account
• iCloud syncing delays
• Browser extensions slowing the system
• Spotlight indexing
• Failing SSD or hard drive
• Apps using excessive CPU or memory
Quick checks you can do yourself
These steps solve around 50% of slow Mac cases.
Check 1 – Restart the Mac
A restart clears temporary files and resets background processes.
Check 2 – Close unused apps
Quit apps you’re not using, especially Chrome, Zoom, and Teams.
Check 3 – Check free disk space
Go to Apple menu → About This Mac → Storage. Aim for at least 20GB free.
Check 4 – Update macOS
Go to System Settings → General → Software Update.
If your Mac is slow after a macOS update
This usually means:
• Spotlight is indexing
• iCloud is syncing files
• Background processes are rebuilding
Try:
• Leaving the Mac plugged in for a few hours
• Restarting after indexing completes
• Checking Activity Monitor for heavy apps
If your Mac shows the spinning wheel often
This usually means:
• Low disk space
• A failing drive
• Apps using too much memory
Try:
• Closing unused apps
• Restarting the Mac
• Running Disk Utility First Aid
If your Mac is slow to start up
This usually means:
• Too many login items
• Damaged system files
• Low disk space
Try:
• Removing login items in System Settings
• Restarting the Mac
• Running Disk Utility in macOS Recovery
When DIY stops working
You should get on‑site help if:
• The Mac is still slow after restarting
• Apps freeze or crash frequently
• The spinning wheel appears constantly
• macOS updates fail
• Disk Utility shows errors
• You need your data preserved
These issues usually require:
• Startup volume repair
• macOS recovery
• Data‑safe macOS reinstall
• User account repair
• Drive diagnostics
On‑Site Apple Mac Support – London & South East UK
If your Mac is running slowly, Keith Thomas provides an often same‑day on‑site support service across:
• Central London
• West, North, South and East London
• Surrey
• Berkshire
• Hampshire
• Wiltshire
Keith Thomas is a Mac Support Specialist in:
• Slow Mac performance issues
• macOS optimisation
• Data‑safe macOS recovery
• macOS reinstall and repair
• iCloud and Apple Account issues
• New Mac setup and migration
• Startup volume and drive issues
Book on‑site help in London and the South East UK
If your Mac is running slowly, Keith Thomas can visit your home or office and get you working again.
Keith Thomas – Apple Mac Support Specialist
Established 2010 – Open 09:30–20:30, 7 Days
Contact Keith Thomas by Telephone: 07800 940756 or by Text to: 07800 940756, or simply complete an online website contact form 24/7