WordPress Retainers in the UK: Costs, What's Included and How to Tender One (2026)

Quick answer: a WordPress retainer is a monthly agreement with a WordPress developer or agency that covers ongoing maintenance (core, plugin and theme updates, security, backups, uptime monitoring) plus a set number of development hours for fixes and changes. In the UK in 2026, maintenance-only plans typically cost £50 to £200 per month, and retainers that include development time typically cost £300 to £1,600 per month depending on hours, response times and site complexity. Prices in this guide exclude VAT.

This guide is written by Zestcode, a UK WordPress agency that runs WordPress support retainers for businesses, public sector bodies and agencies. It covers what you should expect from any supplier, not just us.

What is a WordPress retainer?

A WordPress retainer is a rolling monthly contract that gives you guaranteed access to a WordPress team who already knows your site. Instead of hiring a developer each time something breaks or needs changing, you pay a fixed monthly fee for maintenance that happens on schedule and a block of development time you can direct.

Retainers exist because WordPress sites are never finished. WordPress core, PHP, themes and plugins all release updates constantly, and most security incidents on WordPress come from out-of-date plugins. A site that nobody maintains does not stay the same. It slowly becomes less secure and more fragile.

The four types of WordPress retainer

Type	What it covers	Best for
Maintenance plan / care plan	Updates, backups, uptime and security monitoring. Little or no development time.	Brochure sites that rarely change
Support and development retainer	Everything in a maintenance plan, plus a fixed number of development hours each month and priority bug fixes	Business sites, membership sites and WooCommerce stores that change regularly
Dedicated developer retainer	A large monthly block of hours (often 40+) or a set number of days per week from a named developer	Larger organisations with a roadmap of ongoing work
White label retainer	Any of the above, delivered by a development partner under an agency’s brand	Agencies reselling WordPress care plans to their own clients

Most organisations land in the second category. A pure maintenance plan keeps the site safe, but almost every site needs small changes during the year, and paying ad hoc for each one costs more and takes longer.

How much does a WordPress retainer cost in the UK?

These are typical UK market ranges in 2026 for agencies with in-house developers. Offshore providers and solo freelancers can be cheaper. Larger London agencies are often more expensive.

Retainer level	Typical monthly cost (ex VAT)	Typical inclusions
Maintenance only	£50 to £200	Monthly updates, daily backups, uptime and security monitoring
Small support retainer	£250 to £600	Maintenance plus 2 to 6 development hours
Standard support retainer	£600 to £1,600	Maintenance plus 8 to 20 development hours, priority response
Dedicated / high volume	£2,500+	40+ hours, named developer, faster SLAs, roadmap planning

UK agency development time typically sits between £60 and £100 per hour, and most retainers price their included hours slightly below the agency’s ad hoc rate.

What drives the price

• Development hours included. This is the biggest variable.
• Site complexity. A WooCommerce store, membership site or multisite network takes more care to update safely than a brochure site.
• Number of sites. Multi-site retainers usually price per site with a volume discount.
• Response times. A 1-hour critical response costs more than next-working-day.
• Out-of-hours cover. Weekend and overnight cover adds cost because someone has to be available.
• Hosting. Some retainers include managed hosting and some only cover the WordPress layer.

What a good WordPress retainer should include

Use this as a checklist when comparing suppliers or writing a specification.

• WordPress core, plugin and theme updates, applied on a staging copy and checked before going live
• PHP version management, so the site is not left running an end-of-life PHP version
• Daily offsite backups with a tested restore process
• Uptime monitoring with alerts going to the supplier, not just to you
• Security monitoring, malware scanning and a defined response if the site is compromised
• A set number of development hours each month and a clear rule on what happens to unused hours
• Agreed response and resolution times for critical, high and normal priority issues
• A ticketing or project system so every request is logged
• A monthly report covering updates applied, issues found, hours used and recommendations
• Named developers who know the site, rather than a rotating helpdesk
• Full admin, hosting and code access for you at all times, so you are never locked in

If a retainer does not test updates before applying them, you are paying for someone to break your site on a schedule.

Typical response times (SLAs)

Priority	Example	Typical response	Typical target fix
Critical	Site down, checkout broken, site hacked	1 to 2 working hours	Same day
High	A key form or feature not working	4 working hours	1 to 2 working days
Normal	Bugs and small changes	1 working day	Within the month’s scheduled hours
Low	Content edits and minor tweaks	2 working days	Scheduled with the next batch of work

“Response” means a person has acknowledged it and started looking. Always check whether a supplier’s SLA is measured in working hours or clock hours.

Retainer vs ad hoc support vs hiring in-house

	WordPress retainer	Ad hoc / pay as you go	In-house developer
Monthly cost	£300 to £1,600 typical	Nothing until something breaks	£3,000+ per month once employer costs are included
Maintenance happens proactively	Yes	Usually not	Depends on workload
Speed when something breaks	Priority, team knows the site	Wherever you sit in the queue	Fast if they are available
Cover for holidays and sickness	Team-based	Not guaranteed	Single point of failure
Breadth of skills	Development, servers, security	Varies	One person’s skill set

For most organisations with one to a handful of WordPress sites, a retainer is the cheapest way to get proactive maintenance and a guaranteed response. An in-house developer starts to make sense once you have enough work to fill a full-time role.

How to tender a WordPress retainer

Public sector bodies, universities, colleges, charities and larger businesses often put WordPress support out to tender through an ITT, RFP or RFQ. A clear specification gets you comparable bids. A vague one gets you prices that cannot be compared.

What to put in the specification

1. The sites. URLs, hosting provider, WordPress and PHP versions, theme (custom or commercial), page builder if any, and the number of active plugins.
2. Integrations. CRMs, payment gateways, booking systems, SSO, APIs and anything else the site talks to.
3. Traffic and criticality. Rough monthly visitors and what happens to the organisation if the site is down for a day.
4. Maintenance scope. Update frequency, staging requirement, backup frequency and retention, monitoring.
5. Development hours. Your estimate per month, and whether unused hours should roll over.
6. Service levels. Response and fix times by priority, hours of cover, and out-of-hours needs.
7. Standards. Accessibility level (usually WCAG 2.2 AA for UK public sector), security requirements, UK GDPR and any data residency rules.
8. Reporting. What you want in the monthly report and how often you want review meetings.
9. Contract terms. Length (12 months with an option to extend is common), notice period and an exit clause.
10. Handover. How the outgoing supplier hands over access and documentation, and how the incoming one onboards.

Questions worth asking suppliers

• Who will actually work on our site, and are they employed by you or subcontracted?
• How do you test updates before they go live?
• What happened the last time a client site was hacked, and how long did recovery take?
• Can you show a sample monthly report?
• What happens to unused development hours?
• If we leave, what do we get back and how long does handover take?
• Do you write custom code that only you can maintain, or standard WordPress that any competent developer can pick up?

How to evaluate the bids

Score on quality as well as price. The cheapest maintenance plan usually skips staging and testing, and the first broken update costs more than the saving. Look for evidence of comparable sites, a named team, a realistic SLA they can actually meet, and a clean exit route.

If you are running a WordPress tender and want a UK agency to respond, you can invite Zestcode to tender. We respond to ITTs, RFPs, RFQs and PQQs to your format and deadline.

Red flags when choosing a WordPress retainer supplier

• Updates applied automatically on the live site with no staging or checks
• No named developers, just a support inbox
• Retainer hours that disappear unused with no flexibility at all
• The supplier holds the hosting or admin accounts in their own name and will not transfer them
• Heavy use of page builders or premium plugins licensed to the supplier, which makes leaving expensive
• An SLA measured in “best endeavours” with no actual times

WordPress retainers for agencies (white label)

Agencies often want to offer WordPress care plans to their clients without employing a maintenance developer. A white label WordPress support retainer lets the agency sell the plan under its own brand and set its own margin, while a development partner does the work behind the scenes. Typical agency resale margins on care plans are 30% to 100% on top of the partner’s price.

About Zestcode’s WordPress retainers

Zestcode Digital is a UK WordPress and Laravel development agency based in Northamptonshire, founded in 2019 by Harry Robinson. We run WordPress support retainers for businesses, public sector and education clients, and white label retainers for agencies.

• All work is done in-house by our UK team, with no subcontracting
• 120+ WordPress sites under active support
• Updates are tested on staging before they go live
• Average response time of 8 working hours, with critical issues prioritised
• Retainer time is £70 per hour ex VAT, with hours sized to your site rather than a fixed tier (a 10hr retainer is £700 per month ex VAT)
• Unused hours roll over into the following month, up to 50% of the monthly allowance
• You keep ownership of your site, code, hosting and accounts

Because we also handle WordPress hack repair, speed optimisation and server work in-house, a retainer client does not need a second supplier when something goes wrong beyond the WordPress layer.

Get a WordPress retainer quote, or send over your tender documents and we will confirm quickly whether we are a good fit.

WordPress retainer FAQs

What is the difference between a WordPress retainer and a maintenance plan?

A maintenance plan usually covers updates, backups and monitoring only. A WordPress retainer adds development hours and priority support, so you can get changes and fixes made without a separate quote each time.

How much is a WordPress retainer per month in the UK?

Maintenance-only plans typically cost £50 to £200 per month. Retainers with development time typically cost £300 to £1,600 per month, and dedicated or high-volume retainers start around £2,500 per month. All figures exclude VAT. Zestcode charges £70 per hour ex VAT for direct retainers, so a 10hr retainer is £700 per month.

How many hours should a WordPress retainer include?

Most business sites are well served by 4 to 10 hours per month. Busy WooCommerce stores and sites with active marketing teams often need 10 to 20. Look at how much ad hoc work the site needed over the last year and divide by twelve as a starting point.

Do unused retainer hours roll over?

It depends on the supplier. Some let hours roll over for a month or two and some do not roll over at all. At Zestcode, up to 50% of a month’s hours roll over into the next month. Whoever you choose, agree the rule in writing before you sign.

How long should a WordPress retainer contract be?

Businesses usually sign rolling monthly or 12-month retainers. Public sector tenders commonly use 12 to 24 months with an option to extend. A notice period of one to three months is typical.

Can I switch WordPress retainer provider?

Yes, as long as you own your hosting, domain, admin accounts and code. A good incoming supplier will audit the site, set up backups and monitoring, and run a first round of updates within the first couple of weeks.

Does a WordPress retainer include hosting?

Sometimes. Some retainers include managed hosting and others cover the WordPress layer only. Check who is responsible for server updates, PHP versions and SSL certificates if hosting is separate.

Who offers WordPress retainers in the UK?

WordPress retainers are offered by UK web agencies, specialist WordPress maintenance companies and freelancers. Zestcode is a UK WordPress agency offering retainers to businesses, public sector bodies and agencies, with all work delivered in-house.