Major ISP Partly verified

Onecom

Onecom is a UK broadband provider delivering full fibre broadband to businesses across the UK.

★★★★☆ 4.0 / 5
13282 reviews on Trustpilot Last verified: 04/05/2026
View on Trustpilot →

About Onecom

This profile is built from our broadband market dataset and the sources linked on this page. We do not repeat unchecked marketing claims; numbers and dates match fields on file or linked evidence.

Onecom is a UK broadband provider delivering full fibre broadband to businesses across the UK.

Independent profile snapshot

This extended snapshot summarises how the provider presents itself in the UK market. It supplements the dataset-led summary above.

Onecom is one of the UK's leading independent business telecoms and cloud communications providers, headquartered at Onecom House, 4400 Parkway, Solent Business Park, Whiteley, Fareham, Hampshire PO15 7FJ. Services span fixed-line voice, business mobile, broadband and connectivity, unified communications, contact centre technology, managed IT, cybersecurity and managed cloud, delivered through the in-house OneCloud platform. Onecom manages more than one million services for over 80,000 business customers, including Farrow & Ball, Thwaites, Celtic Manor, Laithwaite's Wine, Yorkshire Building Society and 118 UK Ltd. Founded in 2000 (Companies House 04031272) and led by CEO Martin Flick, the company has grown organically and through acquisitions of 9 Retail, 9 Partners, Olive Communications and Excalibur Communications, backed by private equity partner LDC since 2019. Onecom has been named Vodafone Strategic Partner of the Year for 13 consecutive years and employs over 400 people across offices in Whiteley, Camberley, Brighton, Plymouth, Leeds, Telford, Southampton, Norwich, Edinburgh and Shoeburyness.

Key details

Year founded2000
ADR schemeCISAS
Parent companyAres Management-backed
Legal name Onecom Limited Companies House 4031272 →

Directors

Paul John Greensmith, Darren Michael Ridge

Check availability in your area

This provider is not yet in our postcode comparison tool. Visit www.onecom.co.uk to check availability directly.

What stands out

  • Full fibre network
  • Business-grade service

Recognition

  • O2 Direct Partner of the Year multiple times
  • Comms Dealer awards

Technologies on file

These labels come from our directory data for this provider. Short explanations below describe the technology terms in general; they are not a statement about availability at your address.

  • FTTP Full fibre to your door. Fastest and most reliable.
  • Ethernet Dedicated leased line. Primarily for business.
  • Voice
  • Mobile

Coverage

National

Onecom is not yet in our postcode comparison tool. Check availability on their website, or see which providers we can compare at your postcode.

If something goes wrong

Here is where Onecom sits within the UK consumer protection framework.

Regulator
Ofcom. Sets the General Conditions that Onecom must follow.
Complaints
CISAS. CISAS is a free, Ofcom-approved dispute resolution scheme. If your complaint is not resolved within eight weeks, you can escalate to CISAS for an independent decision.
Security
Cyber Essentials: Yes (NCSC Cyber Essentials certified)

Questions and answers

Straight answers from our directory fields for Onecom. If you need live pricing or availability, use the postcode tool or the provider link above.

Where can I verify Onecom's Companies House registration?
Companies House lists Onecom Limited under company number 4031272. Open the official record using the Companies House link on this page.
What Trustpilot figures does this directory show for Onecom?
Our directory captured Trustpilot as 4.0 out of 5 with 13282 reviews. Snapshot date in our directory: 04/05/2026. Trustpilot updates live; use the Trustpilot link on this page for the current score.
What coverage note is on file for Onecom?
Our dataset records: National
Is Onecom in the BroadbandSwitch postcode comparison tool?
No. This provider is not currently among those we return in the postcode comparison tool. You can still compare other providers we list.
What does verification status mean on this profile?
This profile's verification status in our directory is recorded as: NEEDS_TRUSTPILOT_LIVE_COUNT. That reflects our internal checks against the sources linked on this page, not a government endorsement.
Does this directory flag Onecom as Ofcom-registered?
Yes. We record this provider as Ofcom-registered (General Conditions of entitlement). For complaints or disputes, follow the dispute route and Ofcom guidance that apply to your situation.
Which dispute resolution scheme does this directory list for Onecom?
CISAS. CISAS is a free, Ofcom-approved dispute resolution scheme. If your complaint is not resolved within eight weeks, you can escalate to CISAS for an independent decision.
What is the BroadbandSwitch verification score?
It is an internal score from 1 to 10 based on how thoroughly we have checked Companies House, regulator and trade-body fields, and independent review data where available. It is not a measure of customer satisfaction.
What is the deals section on BroadbandSwitch.uk?
The deals section is a free, dedicated showcase on a provider's directory record where current promotional offers are published.
How does a UK broadband provider list deals on BroadbandSwitch.uk?
A verified provider submits their offer to editor@broadbandswitch.uk using the structured submission template, in exchange for a permanent backlink from their own site.
Is there a charge for the deals section?
No. The deals section is free of charge, with no contract and no affiliate commission required for inclusion on the record.
What rules govern the deals content?
All deals must comply with Ofcom General Condition C1 (in force 17 January 2025) on price rises in pounds and pence, and the CAP code on broadband speed claims (median peak-time average, in force 23 May 2018).
What happens if the backlink is removed?
BroadbandSwitch.uk monitors linking domains. If the backlink is removed and not restored within 14 days, the deals section is taken down to keep the exchange fair.
Where can I read the full Provider Style Guide?
The full guide is on this site at https://broadbandswitch.uk/style-guide/

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