Most CRM software makes your team work the way the software wants them to. Plenty of UK businesses lose hours every week wrestling with a generic platform that doesn’t match how they sell or support customers, and the data quietly rots while they do it. Client information ends up in four or five places at once: a contacts spreadsheet, a CRM someone set up two years ago, an inbox folder, the accounts package and people’s heads. When a long-serving member of staff leaves, a chunk of the client history leaves with them.
I build custom CRM software around your existing sales, service and marketing workflows. You own it outright, so there are no monthly per-user fees eating into your budget and no annual price rises to plan around. When something needs changing, you talk to me, the person who built it.
Where off-the-shelf CRM falls short
Generic CRM platforms work well for a standard sales motion. The trouble starts when your business doesn’t fit the template:
- A “deal” model for work that isn’t deals. Sales-led CRMs assume your work is a pipeline that closes. Professional services firms run matters, engagements, retainers and ongoing reviews, and the software buries them under concepts that don’t match.
- Workflow inflexibility. Standard approval flows handle “manager signs off” but struggle with conditional rules, like a deal over £100k needing director then CFO sign-off while smaller deals don’t. Commission logic is usually a flat percentage and can’t account for product mix, customer tier or prior deals.
- Adoption drops. When the system doesn’t match how people work, they revert to email, spreadsheets and memory. The CRM becomes a reporting tool for management rather than something the frontline relies on.
- Per-user fees compound. Pricing is charged per seat, often with minimum seat counts, and a growing team can find licensing has quietly become one of its larger software costs. Bundled tiers also mean paying for modules nobody uses.
- Integrations through middleware. Mainstream connectors cover Xero, Shopify and Gmail, often via Zapier, which adds sync delays and duplicate records when the matching logic is weak. They rarely cover a twenty-year-old ERP, an industry-specific platform or a back-office system built in-house.
- Data residency is not guaranteed. GDPR compliance does not mean your data sits in the UK. Several large CRM vendors default to US hosting, which some UK firms can no longer accept.
- Forced change. Every time the vendor reworks a feature or retires one, you retrain people and rebuild workarounds whether you wanted the change or not.
The usual result is a pile of workarounds, a finance or sales team running a parallel spreadsheet because the CRM numbers aren’t trusted, and software that costs more every year while delivering less.
What working with me looks like
I map your sales, service and marketing workflows before anyone writes code, so the system fits the way your team works. That includes the awkward parts most platforms gloss over: multi-step approvals, real commission rules, territory hierarchies, retainer-plus-hourly billing and how a deal moves between teams.
You own the system outright. No perpetual SaaS fees, no per-seat licensing, no vendor deciding your roadmap.
It connects directly to the tools you already run, whether that’s accounting software, a payment provider, an eCommerce platform, a phone system or a legacy ERP, and those connections are designed to stay in step rather than drift.
It’s designed around UK GDPR and the rules your sector has to follow from the start. Hosting sits in UK or EU data centres, with audit logging and consent tracking built in.
When you need more, I add it. Marketing automation, deeper analytics, a customer portal, field service. No painful migration to a new platform.
Features I build in
I start with the core most teams need, then extend it. No modules you’ll never open.
Contact and company records. One database for every customer interaction, with custom fields and a full activity timeline, so anyone can see the history of a relationship at a glance. Parent companies, subsidiaries and key people link together, so a group account shows up as one relationship.
Opportunity or engagement pipeline. A visual pipeline with stages set up around your sales cycle, with probability and forecasting that reflect how you close. For service firms, the same view tracks matters or engagements through to completion.
Client intake. An enquiry form that creates the contact, the matter or engagement and its first tasks in one step, with conflict or KYC checks run before work starts.
Workflow automation. Rules that handle reminders, task assignment, escalations, renewals and review dates so follow-ups don’t slip through.
Approval flows. Conditional, multi-level approvals that model your real business rules rather than a single manager sign-off.
Commission and territory tracking. Calculations that account for product mix, customer tier and quota, plus territory hierarchies across regions and teams.
Custom reporting. Pipeline, win/loss, rep performance, revenue by product line, commission accrual, live from the CRM rather than exported to Excel.
Email and calendar. Two-way sync with Microsoft 365 or Google Workspace keeps every conversation and meeting in context.
Phone integration. Automatic call logging with Twilio, RingCentral or an existing PBX, with recordings handled in a GDPR-compliant, encrypted way.
Documents and billing. Files stored per client and per matter with version history, and time and invoices linked to your accounting system so billing reflects the work done.
Mobile access. A responsive interface for field and remote staff, with offline support where the job needs it.
Data security and compliance. Role-based and field-level permissions, full audit trails, consent tracking, retention rules and SAR handling, with UK-hosted options for sensitive data.
Integration layer. An API-first design that connects to accounting, eCommerce, telephony and back-office systems, with deduplication and conflict handling built in.
How I build it
I work in four phases and ship a usable core before the whole project is done.
First Gear (5 days). I map your workflows, the integrations involved and the state of your existing data, then build a working prototype of one core workflow with your own records. You get a one-page build plan with a fixed price, and this is where I’ll tell you if a build isn’t the right move.
Development (about a month for the first release). I build in short cycles with regular demos, so you steer it as it takes shape. The first release usually covers contacts, pipeline, email logging, task tracking and your core accounting integration. Advanced workflows, commission logic, custom reporting and phone integration follow in later phases.
Testing and migration. Whether you’re coming off spreadsheets, an older CRM or several disconnected systems, messy source data is the most common reason migrations overrun. Duplicate contacts, inconsistent formats and missing fields get cleaned before they move, and the old and new systems run in parallel before go-live.
Training and support (ongoing). Training for everyday users and administrators, then support after go-live, with the option to extend.
What it costs
For a team of any real size, a bespoke build usually works out cheaper than three to five years of SaaS subscriptions for the same functionality. A few other things matter here too:
- You own it. No vendor lock-in, no per-seat licensing, no upgrades forced on you, no annual price rises.
- Total cost is predictable. SaaS has hidden costs beyond the headline price: migration, integration setup, training, storage overages and premium support. A custom build is a one-off project plus modest hosting and a support arrangement.
- It grows with you. You add features when you need them rather than starting over on a new platform or jumping to a more expensive tier.
- It’s capital expenditure rather than an ongoing operational cost, which your accountant will have views on.
If you’re a small team with a standard pipeline and mainstream integrations, good SaaS will likely serve you well, and I’d rather say so than sell you a project you don’t need. Custom makes the strongest case when workflows are unusual, integrations are niche or legacy, data residency is non-negotiable, or per-user costs have outgrown their value. Most builds cost £2k-£10k and go live within a month, with the price fixed at the end of First Gear.
Industries I work with
Custom CRM earns its keep where a sector’s workflows or compliance rules don’t fit a generic tool:
- Law firms: matter management with conflict checking, time recording and client intake in one place, with SRA record retention and money-laundering checks under the Money Laundering Regulations built in.
- Accountancy and tax: client master data across tax, audit and company work, engagement letters linked to billing, a deadline calendar, and Xero integration with Making Tax Digital in mind.
- Consulting and professional services: engagements linked to the client record, utilisation planning, retainer-plus-project-plus-hourly fees, proposal generation and an audit trail for client work.
- Financial advisers and financial services: KYC and AML documentation, COBS record-keeping, a secure document vault, review scheduling and FCA-aware audit logging.
- Manufacturing and B2B: complex multi-contact deals, order and fulfilment integration, after-sales service scheduling and distributor management.
- Real estate and property: listings linked to buyer and seller contacts, an offer-to-completion pipeline and commission tracking across agents.
- Healthcare and therapy practices: patient contact records, referral tracking and appointment scheduling, with consent tracking and data handling built to NHS DSPT expectations.
- Retail and eCommerce: one customer view across online and physical stores, order history, loyalty and Shopify or WooCommerce integration.
- Construction and installers: project-based opportunity tracking, survey and fitting schedules, and subcontractor coordination.
- Charities and membership bodies: donor, gift and Gift Aid history, member management, volunteers, campaigns and events.
- Field services: mobile, offline-capable job scheduling and parts ordering.
I adapt the data model, workflows and compliance safeguards to your sector and the way your business runs.
Common Questions About Custom CRM Systems
Should we build a custom CRM or just use Salesforce, HubSpot or Zoho? ›
For a straightforward sales pipeline with standard approvals and mainstream integrations like Xero or Shopify, off-the-shelf SaaS is usually the sensible choice, and I'll tell you so. A custom build earns its place when your work doesn't fit the "deal" and "account" model (matters, engagements, retainers), when you have unusual approval logic or commission rules, need KYC, AML or conflict checks built in, integrate with legacy or industry-specific systems, need strict UK data residency, or have a team large enough that per-user licensing has become a serious annual cost.
How does the cost of a custom CRM compare to SaaS subscriptions? ›
The upfront build costs more than a monthly subscription, but you stop paying per user. SaaS licensing scales with headcount and vendors raise prices over time, so the bill grows as you hire. A custom CRM is a one-off build, most often £2k-£10k with the price fixed before you commit, plus an optional monthly plan from £79. For larger teams it usually works out cheaper across three to five years; for a small team on a cheap plan it often doesn't, and I'll tell you which side of that line you're on.
What's a realistic development timeline? ›
A usable first version covering contacts, pipeline, email logging and your core integration typically goes live within a month. Approval workflows, commission tracking, custom reporting and a phone integration follow as later phases, each with its own fixed price and about a month of work. You get value from the core before the whole thing is finished.
Can you integrate with our accounting, email and phone systems? ›
Yes. Common connections include Xero, QuickBooks, Sage or FreeAgent for invoicing and payment status, Stripe or GoCardless for payments, Microsoft 365 or Google Workspace for email and calendar, and Twilio, RingCentral or an existing PBX for call logging. I build them as direct connections rather than through Zapier-style middleware, and design for the hard parts: deduplication, bidirectional sync conflicts, API rate limits and error recovery, so the data stays trustworthy.
How do you handle UK GDPR and data residency? ›
I build in consent and lawful-basis tracking, audit logging of who viewed or changed each record, retention rules, and Subject Access Request and right-to-erasure handling from the start. Data can be hosted in UK or EU data centres, so it never has to sit on US infrastructure. For regulated firms the specifics go into the core: SRA record retention and conflict checks for law firms, or KYC, AML and COBS record-keeping for FCA-regulated firms.
What happens to data quality and user adoption? ›
CRM data decays fast, and people stop using a tool that feels like admin. I tackle both at the design stage: deduplication rules, validation on entry, and an interface shaped around how your team already works. A fee-earner, an operations manager and a finance lead each get a view that fits their job, so the CRM becomes the place they look first.
Do you provide training and ongoing support? ›
Yes. Training is by role: everyday use for sales and support staff, deeper sessions for administrators, with the option of training one of your people to train the rest. Every build has a 30-day fix guarantee and the first month of hosting free. After that you can take a monthly plan or self-host, and because you own the code, changes never wait on a vendor's roadmap.