Business ISP Partly verified

Mainstream Digital

Mainstream Digital is an alternative network (altnet) operator delivering full fibre broadband to businesses across the UK.

Not yet verified on Trustpilot We add a score once we have confirmed a live Trustpilot profile and a rating on file.

About Mainstream Digital

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.

Mainstream Digital is an alternative network (altnet) operator 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.

Mainstream Digital is a UK national B2B business telecoms provider delivering full-fibre (FTTP), Ethernet leased lines, hosted VoIP telephony, SIP trunking, business mobile and managed connectivity services to business customers across the UK, trading since 2002 from a Gloucestershire base. Registered as Mainstream Digital Limited (Companies House 02742235, incorporated 24 August 1992, with Mainstream Digital trading from 2002) at 701 Stonehouse Park, Sperry Way, Stonehouse, Gloucestershire GL10 3UT and led by Director Ian Fraser Medlock, the company is classified under SIC 61900 (Other telecommunications activities). Mainstream Digital specialises in helping UK businesses migrate from legacy ISDN/PSTN voice infrastructure to cloud telephony ahead of the UK Big Switch-Off, combining connectivity, voice and mobile under a single-supplier relationship with UK-based account management. The operator sources wholesale capacity from Openreach, CityFibre and other carriers to provide national coverage. Mainstream Digital is Ofcom-registered under the General Conditions of Entitlement. Trustpilot records approximately 4.4 out of 5 from 200+ reviews (as of April 2026). Contact is 020 8309 3600 or hello@msdigital.com, with the primary website at msdigital.com.

Key details

Year founded2002
Parent companyIndependent
Legal name Mainstream Digital Limited Companies House 2742235 →

Directors

Ian Fraser Medlock

Check availability in your area

This provider is not yet in our postcode comparison tool. Visit www.msdigital.com to check availability directly.

What stands out

  • Full fibre network
  • Business-grade service
  • Independent UK altnet

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.
  • VoIP

Coverage

National

Mainstream Digital 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 Mainstream Digital sits within the UK consumer protection framework.

Regulator
Ofcom. Sets the General Conditions that Mainstream Digital must follow.
Security
Cyber Essentials: Yes (NCSC Cyber Essentials certified)

Questions and answers

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

Where can I verify Mainstream Digital's Companies House registration?
Companies House lists Mainstream Digital Limited under company number 2742235. Open the official record using the Companies House link on this page.
What coverage note is on file for Mainstream Digital?
Our dataset records: National
Is Mainstream Digital 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 Mainstream Digital 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.
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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