Sereno IT Support Ltd

London, UK Wide

Send an enquiry Visit serenoit.co.uk How to check an IT provider

Assurix Trusted MSP

Assurix Trusted since 2026

Certificate number: TMSP-SERENOIT-2026-0814-01
Valid until: 14/08/2027

Independently assessed by Assurix on 59 controls across security and service. It passes all of them, with live evidence from its own tools. A failure left unfixed for 30 days suspends the Trustmark publicly. Live-measured controls are checked every six hours, the rest on a set cycle. Assurix assesses IT providers. It isn’t one.

Ask Sereno IT Support Ltd for its Trust Portal link. It shows what Assurix checks and today’s result.

About Sereno IT Support Ltd

In Sereno IT Support Ltd’s own words. Assurix hasn’t checked this.

IT Support For Businesses That Want a True Partner

Sereno IT is a London-based Managed IT Support and Cybersecurity partner for SMEs that want reliable IT without the stress of managing it themselves.

Our approach starts with understanding how your team uses technology day to day, from the devices they work on and the cloud systems they rely on, to how quickly they need support when something goes wrong.

We look at where IT is creating delays, frustration, security risks, or unnecessary admin, then manage the technology around your business needs. From support and cybersecurity to cloud, licensing, devices, and user access, we take ownership of your IT environment so issues are resolved quickly and recurring problems are properly addressed.

Through proactive reviews and clear advice, we help reduce disruption, improve security, and make sure your technology supports the way your business actually works. The result is IT support your people can trust and your business can build on.

Email: hello@serenoit.co.uk
Phone: +44 20 7139 4020
Listed in: London
Sectors: Financial Services, Manufacturing, Education, Professional Services, Construction, Non-profit
Specialisms: Microsoft 365, Identity & Access Management, Compliance & GRC, Backup & Disaster Recovery, VoIP & Telecoms, Cloud Migration, Azure, SIEM/SOC, Endpoint Security, Network Infrastructure
Certificates it lists: Cyber Essentials, Cyber Essentials Plus, GDPR Certified; A certificate is a good start. It shows a check passed on one date.
Founded: 2022, 4 years trading, as Sereno IT Support Ltd lists it
Companies House: 14152974, incorporated 06/06/2022
At Companies House: Company active, accounts up to date, as at 08/11/2026.
Staff: 21, as Sereno IT Support Ltd lists it
On Google Maps: Google rating 5.0 from 73 reviews; Checked 09/11/2026. It plays no part in the Directory’s order.

Where Sereno IT Support Ltd is

The pin is a postcode or town centre, which can be a registered office.

MSP (managed service provider) is the industry’s name for an IT provider that looks after your systems.

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What the NCSC tells businesses to check.

The National Cyber Security Centre’s guide lists what to check before you choose an IT provider. Here is what Sereno IT Support Ltd’s Trustmark already covers, and what to ask Sereno IT Support Ltd.

CheckWhat the NCSC saysWhat Sereno IT Support Ltd’s Trustmark covers

PatchingSoftware patched within 14 days of an update being released.Checked by AssurixAssurix measures patching live from the provider’s own tools.

BackupsWhat is backed up, how often, where it is stored, and how often restores are tested.Partly checkedAssurix checks the provider can restore its own backups. Ask how yours are tested.

Access2-step verification, admin accounts only for people who need them, and how the provider connects into your systems.Checked by AssurixAssurix checks sign-in, admin accounts and the tools that reach into your systems.

ContractWhat is included, how incidents are reported, response times, and what happens if you leave.Partly checkedAssurix checks service commitments are in the contract and that leaving is handled properly. Read the terms yourself.

ReferencesReferences, testimonials or case studies from other small businesses.Ask the providerNot part of the Trustmark. Ask for references from businesses like yours.

Source: NCSC, Choosing a managed service provider (MSP).

Send Sereno IT Support Ltd an enquiry

Say what you need. Assurix passes your enquiry to Sereno IT Support Ltd, who may contact you about it. Free, and no obligation.

Or call Sereno IT Support Ltd on +44 20 7139 4020.