You probably use 15 SaaS products today without thinking about it. Microsoft 365 for email. Xero for accounts. Slack or Teams for chat. Maybe Salesforce or HubSpot for CRM. SaaS, Software as a Service, is now the default way UK businesses buy software, and most of the apps that have transformed how SMEs run are SaaS-first.
This guide covers what SaaS actually is, the genuinely best-in-class examples by business function, and how to pick well rather than ending up with 40 overlapping subscriptions and a billing surprise every quarter.
What "SaaS" actually means
SaaS = software you access over the internet, paid for monthly or yearly per user, hosted by the vendor (you don't run the servers). The opposite is "on-premises software", installed on your own kit, paid for once with annual maintenance.
The shift to SaaS has been one-way for over a decade because of the obvious advantages: no servers to maintain, automatic updates, access from anywhere, predictable per-user pricing, faster setup. The downside is subscription sprawl, every department signs up to its own tools, and three years later nobody can remember what the business is paying for.
For more context on cloud generally, see our breakdown of the benefits of cloud computing for businesses and the differences between cloud vs traditional IT.
Productivity & collaboration
Microsoft 365 (~£11–£20/user/month)
Email, Teams, OneDrive, SharePoint, Office desktop apps. The default productivity SaaS for UK SMEs. Business Premium adds proper security tooling and is what we recommend for any client with compliance exposure.
Google Workspace (~£11/user/month)
Gmail, Drive, Docs, Meet, Calendar. Excellent collaboration, particularly for businesses born after 2010 with no Microsoft baggage. Cleaner admin than Microsoft 365.
Slack (free / £6.25 / £11.75 per user/month)
The category-defining business chat tool. Microsoft Teams is the obvious competitor (and free if you're already on Microsoft 365), but Slack still wins for cross-company collaboration and external partner channels.
Notion (£8 / £14 per user/month)
Wiki, docs, project planning, databases, combined into one workspace. Polarising tool: people either love it or never quite get it.
Communications & telephony
Microsoft Teams Phone (£6 + per user/month)
Replaces a traditional phone system entirely if you're already on Microsoft 365.
3CX (free for self-host up to 10 users; SaaS plans from £125/year)
Open, flexible VoIP platform. We're a 3CX certified partner for Birmingham businesses.
Zoom (£12.99/user/month for Pro)
Still the best-in-class video conferencing experience for external meetings, especially webinars.
CRM & sales
HubSpot (free / £15+/user/month for paid)
The best small-business CRM. Generous free tier is genuinely usable. Pricing escalates fast on bigger plans.
Salesforce (£20–£300+/user/month)
The enterprise standard. Overkill for most SMEs but unbeatable at scale.
Pipedrive (£12+/user/month)
Sales-pipeline focused, much simpler than HubSpot or Salesforce.
Finance & accounting
Xero (£15–£59/month)
The dominant cloud accounting platform for UK SMEs. Bank feeds, invoicing, VAT returns to HMRC.
QuickBooks Online (£14–£70/month)
Strong alternative to Xero.
FreeAgent (£19–£39/month)
UK-built, accountant-friendly, includes Self Assessment.
Project management
Asana (free / £8.50+/user/month)
Best general-purpose project management for non-technical teams.
ClickUp (free / £6+/user/month)
Hugely flexible, almost too flexible, and excellent value.
Monday.com (£9+/user/month)
Visual, colourful, fast to onboard. Particularly popular with marketing and creative teams.
Jira (£6.05+/user/month)
Industry standard for software engineering teams. Don't use it for general project management.
HR & people
BambooHR (~£5+/user/month)
Best small/mid-business HR platform.
CharlieHR (£4+/user/month)
UK-built, very straightforward. Strong fit for businesses under 50 staff.
Personio (custom pricing)
European HR platform. Stronger compliance tooling for businesses with EU staff.
Customer support & helpdesk
Zendesk (£15+/agent/month)
Most established customer support SaaS.
Freshdesk (free / £12+/agent/month)
Cheaper alternative to Zendesk.
Intercom (£25+/seat/month)
Best for in-app messaging and live chat on websites.
Marketing
Mailchimp (free / £10.95+/month)
Email marketing standard. Good free tier for businesses under 500 contacts.
Brevo (formerly Sendinblue) (£7+/month)
Better value than Mailchimp at scale. Includes SMS marketing.
Hootsuite / Buffer (£89+/month / £4+/month)
Social media scheduling.
Design & creative
Canva Pro (£12.99/user/month)
Quietly the most useful productivity tool for non-designers in the past decade.
Adobe Creative Cloud (~£20–£60/user/month)
The professional standard for designers, video editors and photographers.
Figma (free / £12+/seat/month)
Modern design tool that has eaten Sketch and Adobe XD's lunch.
File sharing & document signing
Dropbox Business (£9.99+/user/month)
Strong external file sharing.
DocuSign / SignNow / PandaDoc (£8–£35+/user/month)
E-signatures. DocuSign is the recognised standard.
Cyber security
1Password / Bitwarden / LastPass (£3–£8/user/month)
Business password managers. Should be deployed for every employee, see our note on the importance of password management.
Microsoft Defender for Office 365 / Cloudflare / WatchGuard Cloud
Security SaaS we routinely deploy as part of our cyber security service.
How to pick well: a 5-rule checklist
- Default to consolidating. If Microsoft 365 already does it, don't buy a separate tool unless the gap is genuine.
- Per-user pricing scales hard. £20/user/month sounds fine until you remember to multiply by 30 staff and 12 months.
- Annual commitments save 15–20%. Worth it for tools you're definitely keeping.
- Audit annually. Most SMEs are paying for at least 2–3 things they no longer use.
- Centralise billing where possible. A single corporate card per department, with the IT team copied on every renewal, prevents the "what is that £49 charge" mystery.
What about security and compliance?
Things to ask before signing up:
- Where does the data sit? UK or EU is fine for GDPR. US-only can be a problem, see our piece on GDPR and data protection with cloud solutions.
- Single sign-on (SSO) support? SSO with Microsoft Entra ID is the right answer.
- MFA support? If a SaaS doesn't support MFA, treat it as a security risk.
- Data export. Can you get your data out in a usable format if you ever leave?
When SaaS isn't the right answer
- Heavily regulated workloads where you can't use a cloud provider.
- Specialist line-of-business apps (CAD, manufacturing, lab software) without good cloud equivalents.
- Workloads where the data is so large that uploading it to the cloud is impractical.
For everything else, SaaS-first is the right default in 2026.
Putting it together
A realistic UK SME SaaS stack looks roughly like:
- Productivity: Microsoft 365 Business Premium
- Comms: Teams + 3CX or Teams Phone
- CRM: HubSpot
- Accounting: Xero
- Project management: Asana or ClickUp
- HR: BambooHR or CharlieHR
- Password management: 1Password
- Marketing: Mailchimp + Canva Pro
Total cost for a 30-person business: ~£1,200–£1,800/month depending on tier choices.
If you'd like a hand auditing your existing SaaS spend, designing a sensible stack, or rolling out SSO and proper security across all your subscriptions, that's exactly the kind of work we do for Birmingham businesses every week. Get in touch for a free SaaS audit.
