Switching Business Phone Provider in London: What to Check First

London has more choice than anywhere else in the UK — which means more chance of ending up with an aggressive sales pitch, and less chance of anyone actually reading your existing contract before selling you the next one.

Before you talk to a new provider

• Get a full copy of your current contract, not just the headline page.
• List every number you need to keep — including DDIs, non-geographic and international.
• Note any equipment finance still outstanding on handsets.
• Confirm access to your existing DNS if VoIP is involved.
• Identify the exact notice window and how to serve notice in writing.

Getting the migration right

• Agree a port date at least 10 working days out.
• Test the softphone app before the physical cutover.
• Have someone on-site the morning of the port — never do it remotely with no eyes on the phones.
• Confirm your call-recording history is exported before terminating the old service.
• Update every business card, website and CRM entry that lists a phone number.

What London customers overpay for most often

• Prestige numbers on legacy carriers — often 3-4x market rate.
• Bundled handset finance for phones that are already 5+ years old.
• “Unlimited UK calls” bundles for teams that make 90% inbound traffic.
• Call recording retention priced per user per month rather than per storage tier.