Running a business in London means juggling a lot: client meetings across the city, staff working from home some days and the office on others.
Customers expect to reach you quickly however they call. This business phone system in London gives your team a dependable way to handle every call, wherever they are that day.
Call 020 8159 1900 or contact our team to request a free quote today.
A cloud PBX, sometimes called a hosted PBX, can reduce or remove much of the on site hardware and engineer involvement a traditional phone system needs, with lines, handsets and voicemail brought together in one plan.
With teams split across a City office, a Canary Wharf desk and days worked from home, a phone system tied to one building stops making sense.
A cloud system follows your people rather than your postcode, so a call answered in Holborn on Monday can just as easily be taken from a spare room in Croydon on Friday, with no difference to the person calling in.
Making and taking calls is the bare minimum. A phone system that’s worth having gets enquiries to the right person and keeps pace with a London team spread across boroughs, working from home, or both.
A one-person consultancy and a fifty-desk office both get a business phone system in London shaped around how they actually work, not a one-size-fits-all bundle.
Features available can include:
• Auto attendant
• Call queues
• Call routing
• Ring groups
• Voicemail
• Call forwarding
• Call recording
• Business SMS
• Desktop and mobile applications
• Presence and availability
• CRM integration
• Microsoft Teams integration
• Contact centre features
It’s not the length of that list that counts. It’s whether the features you pick actually solve something for your business.
VoIP London businesses use is short for Voice over Internet Protocol: your calls travel over the internet instead of a copper line.
Same handsets if you want them, same numbers, far more flexibility. Our VoIP phone system London page covers the technology in full.
UCaaS stands for Unified Communications as a Service. It replaces separate phone systems, video platforms and messaging tools with one connected cloud environment.
The main benefit for London businesses is removing the cost of managing several independent subscriptions.
A single cloud environment can bring calling, messaging and collaboration together. Full detail lives on our UCaaS page.
CCaaS stands for Contact Centre as a Service. It adds skills based routing, live wallboards, workforce management and AI coaching on top of your core platform. Our UCaaS and CCaaS solutions page covers it in full.
Our system runs both on a single shared infrastructure, so voice, messaging, video and contact centre interactions all share one analytics engine.
| Compare | UCaaS | CCaaS |
|---|---|---|
| Built for | Your whole team | Customer service and sales teams |
| Main job | Everyday calling, meetings and chat | Handling high volumes of customer contact |
| Typical tools | Business calling, video, messaging, voicemail to email | Call queues, skills based routing, wallboards, quality monitoring |
| Channels | Voice, video and chat | Voice plus email, web chat, SMS and social media |
| Reporting | Call activity and usage | Real time dashboards and agent performance |
| Ideal for | Offices, trades, retailers and professional firms | Support desks, booking lines and busy sales teams |
Plenty of businesses choosing a business phone system in London start out with UCaaS alone and only add the contact centre layer once call volumes justify it. Because both sit on the same platform, nothing needs replacing when that day comes.
No two businesses use their phones the same way. The right system lets you pick the features that actually match how your team works day to day.
An auto attendant can greet callers and provide options for departments such as sales, accounts or support, helping customers reach the right team without someone having to answer every call.
Call queues can hold callers when your team is busy and distribute incoming calls according to the rules configured for your organisation.
Route calls to individuals, departments, offices or other destinations based on your business hours, team availability and chosen call-flow rules.
Depending on the system, employees can use compatible applications on computers and mobile devices, helping them stay connected when they are away from their desk.
Where enabled, call recording can help businesses review conversations, support training and maintain useful records. Blake Telecom provides 30 day hot storage call recording, with cold storage available for up to 10 years.
Depending on the integration, customer information and call activity can be connected with business applications, helping teams keep communications closer to their existing workflows.
Businesses already using Microsoft Teams can connect business calling with their existing working environment, depending on the chosen configuration.
Dial 020 8159 1900 to speak with one of our fully trained UK based support experts who are here for your business phone system in London and ready to help.
The underlying platform infrastructure is certified to ISO 27001, SOC 2 Type II and Cyber Essentials Plus standards, with encryption used on every call. See the NCSC guidance.
Contact centre capabilities can be added to your business phone system in London where your business needs them.
Whether you run a small service desk in the city centre or an energy business spanning several sites, the tools scale to fit.
Every system goes live in five steps, managed by our team. Most systems can be prepared remotely, with the approach agreed around your existing equipment and connectivity.
Step 1. Discovery Call
Your business phone system in London starts with a discovery call: your account manager covers your current setup, team size, sites across the city, and the applications you rely on.
Step 2. Remote Build
Your system is configured and fully tested before delivery. Call routing, hunt groups, IVR menus, and integrations with Microsoft Teams and your other business applications are all working before your handsets leave the warehouse.
Step 3. Plug and Register
Where desk phones are supplied, they can be configured before delivery so they are ready for installation when they arrive.
Step 4. Your 020 Number Carries Across
Your existing 020 number transfers to the hosted platform, with number porting typically taking 10 to 15 working days, managed by our team throughout.
Step 5. Your Team Is Live
Teams using the app can often be live quickly. Desk phone users typically follow within the same working day. Every user receives a short onboarding guide covering calls, voicemail, and messaging.
We install telephone systems London businesses rely on right across the capital and its wider commercial belt, from the financial hub around the City and Canary Wharf to the creative and legal quarters in Shoreditch, Farringdon and Holborn.
We also cover the West End, Croydon and towns right across Greater London.
Your business phone system in London is managed remotely, so changes happen in minutes and there’s nothing on site to maintain, wherever you sit on that map. Call 020 8159 1900 and we’ll confirm coverage before you commit to anything.
Blake Telecom has supplied business communications since 2004, and London businesses tell us they want two things above all else: a system that just works, and a team who picks up when you call.
Our VoIP phone system in London can typically be up and running quickly, with UK based support throughout. The platform behind our business phone systems has been recognised 14 times in the Gartner Magic Quadrant for Unified Communications as a Service.
Every plan includes 30 day hot storage call recording, CRM integration and native Microsoft Teams support, so calls get answered fast. Our specialists can talk you through what fits your business phone system in London best.
Supplying business communications since 2004, with more than 30 years in the industry behind the team and deployments running from two person practices to organisations spanning several sites.
Configured before delivery, helping your team get started quickly once the equipment arrives. App based users can often be brought online quickly once the system is configured. One team owns the whole journey and stays with you after go live.
Your 020 number lives on iPhone, Android, PC, Mac and desk phones alike, so wherever your people answer, London callers reach one consistent, professional business.
Users can make and receive calls on their London business number from compatible mobile and desktop applications, whether working from the office, home or travelling. Outbound calls display your 020 number wherever you’re calling from.
2026
2025
2025
2024
2026
We want every client to have a great experience with us, not just on day one but for as long as you’re with us.
That’s why handset maintenance never comes with a bill. Buy your handset from us, and while the model is still supported, you’ll get free software updates and a lifetime manufacturer’s warranty.
Please contact us for a list of supported models.
Every business has different requirements, so the right business phone system in London depends on users, features, numbers, devices and connectivity. Visit our pricing page to see how we structure business communications packages, or speak to our team to discuss what your business needs.
Since 2004, we’ve supported businesses through changes in technology, changes in the way people work, and now the move away from traditional landlines altogether. That consistency matters when you’re choosing who looks after something as basic as your phone line,
You’re not just buying a system, you’re choosing a team that continues to support your business after the system goes live.
The PSTN switch off is Openreach’s retirement of the UK’s old landline network, scheduled for 31 January 2027.
London’s older commercial buildings are more exposed than most, with lift phones, door entry systems and alarm panels often running over the same copper lines as the desk phone.
These services may stop working if they rely on the retiring network and haven’t been migrated. We handle this as a single, planned move, with your numbers transferred and lift or alarm lines assessed alongside it.
Businesses in listed or older buildings across the City, Holborn and the West End should start this conversation well before the 2027 deadline.
Fixed lines, hardware on your premises
✕ Tied to a physical line at one address
✕ Standard call audio only
✕ No mobile or desktop apps
✕ Video calling needs a separate tool
✕ No transcription or AI features
✕ Adding users means an engineer visit
Ageing hardware, rising maintenance
Hosted over broadband, any device
✓ Works anywhere with a connection
✓ HD voice on every call
✓ iPhone, Android, PC and Mac apps
✓ Video meetings built in
✓ AI call transcription included
✓ Add users the same day, online
Reliable uptime with proactive monitoring
Director
Moving to rural office space, without the benefits of reasonable broadband speed, and without telephony services include, Blake Telecom directed us to alternatives and the solution we have is excellent. 4G Wi-Fi VoIP, serving our current needs and situation perfectly. The team were succinct in his explanation of what we could achieve, providing something promptly and getting this set up with minimum fuss and delay.
Director
Blake Telecom have been supplying our business communications for well over 10 years. We have found both their systems and support to be fully robust and they have given an excellent service throughout with value for money for their products. Their approach to helping our business has always been excellent from every aspect and I would highly recommend their services
Director
Blake Telecom have revolutionised the way we operate.They have gone the extra mile in making the setup process painless and it was easy to install. Any questions are dealt with quickly and efficiently, and the staff are a pleasure to deal with. I truly wish we found them years ago. We recommend Blake Telecom to many of our suppliers and even customers whenever we can.
Director
Get in touch to discuss a telephone system built around how your London business actually operates, your people, your sites and the way customers reach you.
• Cloud hosted telephone systems for London
• Keep your existing 020 number where porting is possible
• Office, remote and mobile working options
• Call routing, queues and auto attendant
• Call recording available
• Microsoft Teams integration available
• Business broadband London companies rely on
• UK-based business telecoms support
If you have any questions that are not answered here, then either check out our helpful blog or contact us for further advice.
Ready to upgrade your business phone system in London? Contact us for a free quote, or call 020 8159 1900 to speak with the team directly.
Our UK based team is available Monday to Friday, 9am to 5.30pm.
Author: Glenda Jackson. Last Reviewed: 04/08/2026
Set up your new VoIP phone system, fully working today, including a new number and programming.
Blake Telecom have been paramount to the growth of our business by continuing to offer our business the very highest level of service. The equipment we have been supplied has been extremely flexible allowing us to change needs. Blake Telecom's knowledge and expertise has been very professional and we look forward to working together on our future projects.