Backups locked so they can't be altered, encrypted or deleted — even by someone with administrator credentials — configured and monitored around the clock, backed by our 99% SLA guarantee.
Backups are locked at the storage layer for a defined retention period, so not even a compromised admin account can delete or encrypt them.
Retention periods and immutability windows set around your actual recovery needs, not a default that either costs too much or protects too little.
Recovery from immutable backups is actually tested, with ongoing monitoring backed by our 99% SLA guarantee.
A standard backup protects you from accidental deletion and hardware failure, but it doesn't protect you from an attacker who's specifically targeting your backups. Modern ransomware routinely searches out and encrypts or deletes backup files as a first step, precisely because attackers know a working backup is the one thing that lets a victim recover without paying. Immutable backup solutions close that gap by locking backup data at the storage layer for a defined retention period, so it genuinely cannot be altered, encrypted or deleted during that window — not by ransomware, not by a compromised administrator account, and not by an attacker who's gained full network access.
The technical mechanism behind this is usually a write-once-read-many, or WORM, storage policy applied at the object storage level, with a retention lock that even the storage account owner can't override before the period expires. This is meaningfully different from simply storing a backup in a separate location or with a different login — those approaches help, but a sufficiently persistent attacker who gains the right credentials can still delete or overwrite them. True immutability removes that possibility entirely for the duration of the lock, regardless of what credentials an attacker obtains.
Getting the retention period right matters more than it might seem. Set it too short, and you risk the immutability window expiring before a slow-moving attack that sat undetected in your network for weeks is even discovered — some ransomware groups deliberately wait before triggering encryption, specifically to let backup retention cycle past any recoverable, clean copies. Set it excessively long or apply it to every backup regardless of importance, and storage costs climb without a corresponding increase in protection. We size retention windows around realistic detection timescales and the genuine value of the data, rather than a single default applied everywhere.
Immutable backup is also increasingly expected rather than optional. Cyber insurance underwriters are asking more detailed questions about backup immutability specifically, not just backup existence, and several UK sector-specific compliance frameworks now reference tamper-proof backup as good practice for ransomware resilience. Businesses that can demonstrate genuinely immutable backups, not just "backups stored somewhere else," are increasingly finding this matters at renewal time.
It's worth being clear about what immutability doesn't solve, too. It won't stop an attacker gaining initial access to your network, and it won't recover data that was never backed up in the first place because a system was missed from scope. Immutable backup is one deliberately strong layer in a wider defence, sitting alongside endpoint protection, multi-factor authentication and staff awareness — not a substitute for any of them. We're upfront about this rather than presenting immutable backup as a single fix for ransomware risk.
UK businesses are moving beyond standard backup toward immutable backup specifically because ransomware groups have adapted their tactics to target backups directly, knowing that a working backup is what lets a victim recover without paying a ransom. A backup an attacker can delete or encrypt is not meaningfully different from having no backup at all once an incident is underway.
Immutability locks are enforced at the storage layer, meaning even an attacker with full administrator access cannot alter or delete backup data within the retention window.
Cyber insurance underwriters and sector compliance frameworks increasingly ask specifically about backup immutability, not just backup existence.
Immutability windows are set to match realistic attack detection timescales and genuine data value, rather than a single generic default.
An immutable backup that's never been restored is still just a hope. We test recovery so you know it works before you ever need it.
The immutable backup configuration and testing work most businesses would rather not handle themselves.
We set immutability windows based on realistic attack detection timescales and genuine data value, rather than a single generic default applied everywhere.
We run genuine recovery tests from immutable backups, confirming restored data is usable rather than trusting an unverified storage dashboard.
From first conversation to a tested, immutable backup setup.
We review your current backup setup, critical data and realistic attack detection timescales for your business.
We design retention windows and immutability policy sized to genuine risk, not a single default.
We configure WORM storage policies and retention locks, verifying they're genuinely enforced at the storage layer.
We test recovery and provide ongoing 24/7 monitoring, backed by our 99% SLA guarantee.
We configure genuine WORM storage policies and retention locks, not just a backup copy stored somewhere with a different login that an attacker could still delete.
Retention windows are sized to realistic attack detection timescales and genuine data value, not a single default applied regardless of what's actually at risk.
Recovery is tested properly, with restored data confirmed usable, rather than trusted on the strength of an unverified storage dashboard.
Immutable backup sits alongside our wider business continuity planning, network administration and managed IT support services, so it's part of a genuine recovery plan, not a standalone product sold in isolation.
We're upfront about the retention and storage cost trade-offs involved, and we'll review your immutability configuration periodically as your risk profile and compliance requirements change. If you already have backups in place but aren't sure whether they're genuinely immutable, we'll audit the existing setup honestly and tell you exactly what protection you currently have versus what you assume you have.
Pricing depends on data volume, retention period and how many systems need protecting. Every quote is tailored — get in touch for a free assessment.
Immutable backup for critical data only
Immutable backup across all systems with testing
Multi-site immutable backup with dedicated account management
A backup that can be deleted isn't much of a backup. Here's what sets us apart.
Retention locks enforced at the storage layer, not just a separate copy an attacker with the right credentials could still remove.
We run real recovery drills and confirm restored data is usable, rather than trusting an unverified backup dashboard.
A written service level commitment on your backup infrastructure, not just a marketing promise.
Immutability windows matched to realistic attack detection timescales, not a one-size-fits-all default.
Immutable backup, business continuity planning and managed IT support sit under the same roof.
Monitoring and immutability reporting suitable for cyber insurance renewals and compliance audits.
We're upfront about storage cost and our management fee, so quotes are easy to compare.
We revisit retention and immutability configuration as your data, systems and compliance needs evolve.
Contract terms are explained clearly before you sign, so there's nothing awkward buried in the small print later.
Standard cloud backup protects against accidental deletion and hardware failure, but if an attacker gains the right credentials, they can typically delete or overwrite it just as easily as production data. Fully offline or air-gapped backup — data physically disconnected from the network — is genuinely immune to a network-based attack, but it's slower to restore from and often impractical for frequent backup cycles in a modern SME. Immutable backup sits between the two: it stays connected and fast to restore from like standard cloud backup, but is genuinely locked against alteration or deletion for its retention period, regardless of what access an attacker obtains. For most UK businesses weighing up ransomware resilience against practicality, immutable backup delivers close to offline-level protection without the operational drawbacks of a fully air-gapped setup. Many businesses end up combining approaches — immutable cloud backup for day-to-day recovery speed, with an occasional offline or air-gapped copy of the most critical data as an additional layer for the worst-case scenario.
Immutable backup has moved from a large-enterprise technology to a mainstream expectation for UK SMEs, driven directly by ransomware groups adapting their tactics to target backup infrastructure specifically. Cloud providers now offer WORM storage and retention lock features as standard, making genuinely tamper-proof backup accessible to businesses of any size, provided it's configured properly rather than left on default settings.
What to look for in a provider: genuine storage-layer immutability rather than just a separately-stored copy, retention windows sized to realistic risk rather than a single default, and recovery that's actually tested rather than assumed to work.
Sectors we support: professional services firms handling sensitive client data, businesses pursuing Cyber Essentials or cyber insurance renewal, and any UK SME that's seen a competitor or supplier lose their backups alongside their production data in a ransomware attack.
How we deliver it: Our configuration and testing work is remote-first for businesses across the UK, with clear reporting suitable for insurers and auditors.
Common starting points: Some businesses come to us with no backup immutability at all, relying on a standard cloud backup they assume is safe; others have immutability enabled somewhere in their existing setup but have never verified it's genuinely enforced. We handle both, starting with an honest audit rather than assuming either way.
Delivery model
Genuine WORM immutability, tested recovery and 24/7 monitoring for every immutable backup setup we manage across the UK.
immutable backup solutions
WORM storage and retention locks configured to protect backups from ransomware and deletion, tested and monitored 24/7.
business continuity planning
Immutable backup forming part of a wider, tested continuity plan covering recovery targets and staff procedures.
Got questions about immutable backup solutions? We've answered the most common ones below.
An immutable backup is locked using a write-once-read-many storage policy with a retention lock, meaning it genuinely cannot be altered, encrypted or deleted for a defined period, regardless of what access an attacker or administrator has.
Pricing depends on data volume, retention period length and how many systems need protecting. We'll assess your data and provide a tailored, transparent quote rather than a generic price list.
Not necessarily — if an attacker gains sufficiently broad access, they can often still delete or overwrite a backup stored under separate credentials. Genuine immutability removes that possibility for the duration of the retention lock.
It depends on how quickly a serious incident would realistically be detected in your business and the value of the data involved. We assess this rather than applying a single default to everyone.
Often, yes. Insurers increasingly ask specifically about backup immutability, and a properly configured, documented setup is exactly the kind of evidence they're looking for.
That depends on your risk tolerance and budget. We often recommend prioritising the systems and data that would cause the most damage if lost or held to ransom, rather than applying immutability universally by default.
Yes, we can audit your current backup setup and add or migrate to immutable storage without necessarily starting your backup strategy from scratch.
We verify the retention lock is genuinely enforced at the storage layer during setup, and provide reporting that documents this for insurers, auditors or certification assessors.
Limited time offer — valid until 31/05/2026
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