Reliableconnectivityforgrowingbusinesses.
Founded in 2009, Quantum Telecommunications has grown into one of the UK's most trusted business telecoms providers, delivering broadband, mobile, VoIP and network infrastructure backed by a 99.98% uptime guarantee.
4.8 out of 5 from 2,100+ reviews on Trustpilot
99.98%
Network Uptime
14,200+
Sites Connected
97.6%
UK Coverage
< 4 hrs
Avg. Response
Everything your business needs to stay connected
Broadband, mobile, VoIP and network support, all on a single monthly invoice and a single account number.
Business Broadband
Full-fibre FTTP and leased line connectivity from 100Mbps to 10Gbps, with symmetrical upload speeds built for VoIP, cloud backups and multi-site VPNs. Every connection ships with a static IP and a dedicated support line.
Mobile Plans
Shared-data business SIMs across our multi-network roaming estate, so your team stays connected even where a single carrier drops out. Pooled data, real-time usage dashboards and next-day eSIM provisioning as standard.
VoIP & Phone Systems
Cloud-hosted phone systems with call recording, IVR routing and CRM integration, deployed on your existing broadband with QoS traffic shaping. Keep your existing numbers, add or remove lines the same day.
Network Support
24/7 monitoring across routers, switches and firewalls, with UK-based engineers on the phone for critical faults. Includes quarterly infrastructure reviews and same-day on-site callout.
TheQuantumDifference
Best Network.
We build and operate our own resilient fibre core, with redundant routing and automatic failover across every business connection we deliver.
That means 99.98% uptime as standard, backed by a service credit guarantee written into every contract.
Great People.
Every call is answered by an engineer working from our Leeds or Reading support desks, never a routed overseas call centre.
You'll have a named account manager from day one who knows your setup when you call.
Honest Pricing.
The price on your quote is the price on your invoice, for the full life of the contract, with no setup fees buried in small print.
No surprise hikes at renewal, and no charge for early termination if we fail to deliver on the service level we agreed.
Coverageacross97.6%ofUKpostcodes
Full fibre and leased line availability in every major UK city, with mobile priority and rural connectivity options for sites off the main network.
97.6%
UK Postcode Coverage
14,200+
Business Sites Live
312
Exchange Points
24/7
Network Monitoring
Trustedbybusinessesthatneedtostayonline
“We switched three sites over to Quantum's leased lines in under a fortnight. Our old provider took six weeks just to schedule a survey. The failover kicked in during a cabinet fault last winter and none of our staff even noticed.”
Rebecca Holt
Operations Director, Marlowe Logistics
“Porting 40 numbers onto their VoIP platform was the least stressful migration we've done. Their engineer stayed on the call until every extension was tested. Call quality has been flawless since, and the invoice hasn't changed once.”
Daniel Osei
IT Manager, Bracknell & Vance Solicitors
FAQs
Answered.
Most standard broadband installs are live within 10 to 15 working days of signing, and mobile SIMs ship next day. Leased lines depend on the build required at your site, but we'll give you a firm date before you commit, not a vague estimate.
Still have questions?
Reach OutLet'stalkaboutyourconnectivity
Tell us about your business and one of our account managers will come back to you within one working day with a quote.
Call Sales
0808 196 4420Support Hours
Mon–Fri, 8:00–18:00. Network monitoring is 24/7, 365 days a year.