Updated on: 16 Sep 2025 | By Actual Article
Artificial intelligence is now accessible to even the smallest UK businesses. In fact, HubSpot reports that AI tools can save workers about 2.5 hours per day and 28% of businesses say AI has cut their costs. For example, IBM finds that AI-powered chatbots can reduce customer service costs by up to 30%.
Below we highlight a range of SaaS platforms, many with free tiers or low monthly fees to boost productivity in customer service, marketing, automation, writing and finance. Each entry lists pricing, key features and best-fit use cases.
Offers a free forever plan (basic chat widget, email integration) with paid plans from about $24.17/month (~£20). Tidio’s AI chatbot can handle website inquiries, collect leads, and integrate with Messenger, WhatsApp and email.
Ideal for small e‑commerce or service sites wanting 24/7 chat support.
Free plan for up to 1,000 contacts. ManyChat lets you build Facebook/Instagram Messenger bots and SMS campaigns. Its Pro tier (from $15/mo) adds advanced flows and analytics. ManyChat is best for retail or B2C companies that chat via social media.
Includes a free edition (up to 3 operator seats). SalesIQ is a multi-channel help desk with live chat, chatbots, and visitor tracking. The free tier lets a small team chat with website visitors and answer queries. This suits service businesses (e.g. agencies, consultancies) that need basic AI chat on their site.
Free plan for 2 users. Crisp provides live chat, chatbots and “shared inbox” email integration. Its free tier includes unlimited chats, 1000 contacts, and multi-channel chat (web, Messenger, etc.). Great for solopreneurs or micro-teams needing a simple chat solution with AI-style auto-replies.
Well-known service with a Free tier for up to 500 subscribers and 1,000 mails/month. Includes basic email templates, simple automations and audience segmentation.
Paid plans (from ~$9.99/mo) add multi-step campaigns and analytics. Best for businesses starting email newsletters or drip campaigns without upfront cost.
Generous Free plan (up to 1,000 subscribers and 12,000 emails/month). Features include drag‐drop editor, automations (e.g. welcome emails), landing pages and basic analytics. Premium plans (from ~$10/mo) unlock more templates and advanced features. Suited to bloggers, small shops or nonprofits that need a low-cost email platform.
Free to send up to 300 emails per day (unlimited contacts). Supports email campaigns, transactional email (invoices/notifications), and basic CRM. Paid plans (from ~$25/mo) raise daily limits and add marketing automation. Good for businesses that send frequent transactional emails (e.g. order confirmations) on a tight budget.
Free for up to 2,500 contacts and 15,000 emails/month. Offers email templates, automation funnels, and real-time analytics even on the free plan. Paid plans (from ~$11/mo) add features like custom domains and more segmentation. Ideal for creators or small teams needing more free send volume than typical tools offer.
Free plan covers 3 social channels and 10 scheduled posts per channel. Connects Facebook, Twitter, LinkedIn, Instagram, etc. Paid tiers (from ~$6/mo) let you add channels and get more scheduled posts, plus basic analytics. Perfect for solo entrepreneurs or micro-businesses who post sparingly and need an easy interface.
Free for 1 brand, 1 user, and up to 6 social channels (Facebook page, Instagram, LinkedIn page+profile, X (Twitter), Google Business). Supports unlimited posts per month at no cost. Analytics and scheduling (including queues) are included.
This suits very small teams (1–2 people) wanting an all-in-one social management dashboard.
If you need Instagram/Pinterest focus, Later has visual drag‐and‐drop scheduling. Its lowest plan starts ~$18.75/mo (billed yearly). Later includes basic analytics and free stock images. It’s best for social-media-savvy businesses (like influencers or boutiques) who value visual planning.
Offers 1,000 free OCR units per month. You can submit images or PDF scans for text extraction, handwriting recognition, form parsing, etc. (Above the free tier it’s ~$1.50 per 1,000 units.) Use it via Google Cloud’s console or API. Ideal for businesses digitizing receipts or documents in low volumes.
5,000 free transactions/month on the free tier. Supports text recognition in many languages, handwritten text (with the Read API) and PDF text extraction. Paid usage is on a per-1,000-transactions basis. Good for UK businesses familiar with Microsoft Azure wanting an easy OCR add-on.
Free web-based OCR (no sign-up). You upload images or PDFs and it returns editable text. It even offers a free API for developers (limited use). Since it’s free for files ≤5 MB and does not retain your data, it’s handy for occasional receipt or invoice scans without buying software.
The free plan catches spelling, grammar and punctuation errors and even suggests conciseness improvements. It works in browsers and desktop apps. (Premium Grammarly adds advanced style and vocabulary suggestions.) Great for ensuring emails, social posts or documents are polished.
Free tier includes a paraphrasing tool (up to 125 words at a time), basic grammar checker and summary tool. QuillBot’s AI can rephrase sentences, fix simple mistakes, and simplify language. Good for small teams needing quick rewrites or content generation prompts at no cost.
The free ChatGPT-3.5 chatbot can generate draft text, brainstorm ideas or write simple marketing copy. (It’s not a separate SaaS subscription, but businesses often use it for free content help.) Pair it with Grammarly/QuillBot to refine its output.
Zoho Invoice
Completely free invoicing software. Create unlimited invoices, quotes and recurring bills with a professional template. You can also track expenses and time, and accept online payments. Ideal for sole traders or small firms who want a rich feature set at £0/mo.
Free invoicing platform for small businesses. Unlimited invoices, estimates and clients are supported. It offers time & expense tracking and integrates with PayPal/Stripe for payments. Good for freelancers or micro-businesses that need a simple online invoicing tool without fees.
The Free plan allows up to 5 clients with unlimited invoices. (You pay only if you want unlimited clients or to remove “Invoice Ninja” branding.) Includes custom invoice designs, auto-reminders, and even basic time tracking. Suited to very small businesses or side-hustles with a handful of customers.
Wave’s Starter plan is free and includes accounting, invoicing, receipt scanning and expense tracking. You pay nothing for the core software. (Wave only charges fees on payments/payroll.) Wave is popular among freelancers and service businesses needing full bookkeeping.
Invoicer.ai: A newer tool offering free invoicing plus AI receipt scanning and an “AI assistant” to manage tasks. All core features are free.
UK small businesses can tap into free or low‑cost tiers of powerful tools, from chatbots and email marketing to OCR and accounting, to automate work and engage customers smarter. Each tool above has a solid free offering or trial, plus clear low-priced plans for growth.
This guide is part of our UK Tech Revolution 2025 Hub , where we explore AI, robotics, supercomputing, and essential digital skills shaping the future. Visit the hub to discover more resources and stay ahead in the UK’s fast-evolving tech landscape.
