You pay for five SaaS tools and still track export licences by hand, because none of them know what a Plymouth dockyard is
Custom software for a Plymouth marine, defence, or marine-science business typically costs £50,000 to £150,000 over 4 to 8 months. Generic SaaS is cheap to start and covers the universal stuff; it has no concept of export control, dockyard access, tide windows, or clearance, which is precisely the operating reality that defines Britain's Ocean City businesses.
You've assembled a stack of off-the-shelf SaaS, one tool for projects, one for documents, one for invoicing, and stitched it together with manual work and goodwill. Each tool does its narrow job. None of them understands that a job can't proceed until a fitter's dockyard pass is valid, that a part can't be quoted overseas without a licence check, or that a survey has to happen inside a tide window. So your people fill those gaps by hand, every day.
The result is a business that looks digitised but runs on human glue. The expensive lesson lands when a member of staff who held a process together in their head leaves, and you discover how much of the operation was never in any system at all.
Where the off-the-shelf tools fall short
- Generic SaaS with no model for export control, clearance, dockyard access, or tide windows
- A stack of disconnected tools held together by manual re-keying
- Critical process logic living in individuals' heads rather than software
- Compliance work treated as invisible overhead because no tool measures it
Custom custom software: what Plymouth teams actually get
Custom software encodes the constraints that make your business yours: it won't let a job start without a valid dockyard pass, it checks for an export licence before a quote leaves, and it schedules surveys around tides. It replaces the human glue between your SaaS tools with logic that runs the same way every time, so the operation survives staff turnover and an audit doesn't expose a dozen undocumented manual steps.
Feature priorities for Plymouth teams
Plymouth custom software: the full scope
The engagements Plymouth teams bring us most often: legacy modernization, systems integration, microservices, database design, bespoke software development, SaaS development and web application development.
- Your real constraints are invisible to every off-the-shelf tool you've tried
- Manual glue between SaaS tools is consuming serious staff time
- Key processes exist only in people's heads
- An audit would expose undocumented manual steps across your stack
- Your processes are genuinely standard and well served by SaaS
- You can't yet commit budget or an owner to a bespoke platform
- You're early enough that requirements are still moving weekly
- The manual gaps are minor and not actually costing you much
The honest cost picture for Plymouth
| Project scope | Typical cost | Timeline |
|---|---|---|
| Targeted custom app filling one critical gap | £50,000 to £80,000 | 4 to 5 months |
| Multi-module platform replacing several SaaS gaps | £90,000 to £130,000 | 6 to 7 months |
| Full custom operations platform with compliance core | £120,000 to £150,000 | 7 to 8 months |
Timeline: what happens, and when
Exactly what you get
You get software that runs your business the way your business actually works: jobs that won't start without a valid dockyard pass, quotes that get a licence check before they leave, surveys scheduled around tides, and the manual glue between your tools replaced by logic that behaves the same every time. The processes that live in your best people's heads finally live in the system too.
How to choose a developer in Plymouth
Pick a team that listens for your constraints before pitching a solution. Ask them to phase the work so you de-risk one gap at a time, and to integrate with the accounting and inventory tools that already serve you well. The honest partner will tell you which processes should stay on off-the-shelf SaaS, because not everything needs building.
- Your real constraints, dockyard passes, export licences, tide windows, enforced by software not memory
- The manual glue between disconnected SaaS tools replaced by reliable automation
- Process knowledge captured in the system so it survives staff turnover
- Compliance time finally visible and costed instead of buried as overhead
- A coherent platform your ERP (Enterprise Resource Planning), CRM (Customer Relationship Management), and inventory systems plug into cleanly
- A real upfront investment versus a low monthly SaaS subscription
- You become responsible for maintenance, hosting, and evolution over time
- Replacing too much working SaaS at once is risky; phasing is essential
- For genuinely standard, universal processes, off-the-shelf SaaS is still the right answer
- !A vendor who can't name your real constraints back to you; ask them to explain a dockyard pass's effect on scheduling
- !Proposing to replace all your SaaS at once; ask for a phased plan instead
- !No discussion of maintenance; ask what year-two ownership looks like
- !Ignoring the SaaS you want to keep; ask how it integrates rather than rips out
- !Hand-waving on audit logging; ask to see how a controlled step is recorded
If custom software is on the roadmap, website, inventory management, warehouse management usually follow within the year. Budget them as one conversation.
Rohan advises mid-market and enterprise teams on ERP, CRM and custom software, and has led delivery on dozens of business-software builds.
Writes for Digital Heroes, shipping business software for 2,000+ brands across 55+ countries since 2017.
Frequently asked questions
Why isn't generic SaaS enough for us?
It covers universal processes well but has no model for export control, dockyard access, clearance, or tide windows. Those constraints define how a Plymouth marine or defence business actually operates, so they end up being handled by manual work that no off-the-shelf tool can absorb.
Do we have to replace all our existing tools?
No, and you shouldn't. The right approach keeps the SaaS that genuinely works, like your accounting package, and builds custom software for the constraint-heavy gaps, integrating the two. Phasing the work is how you avoid a risky big-bang switch.
What's the real cost of running on manual glue?
Beyond the daily time, the danger is concentration risk: when a person who held a process together leaves, you discover it was never in any system. Custom software captures that logic so the operation survives turnover.