Your London importer's supply chain now runs through a customs broker that SAP never planned for
Custom supply chain software in London typically costs £70k to £200k over 5 to 9 months. You build custom when your supply chain crosses borders and customs in ways generic SCM can't model, when post-Brexit broker handoffs, duty calculations, and lead-time variability sit outside SAP in spreadsheets and emails. For a London importer or distributor, the trigger is when a customs delay you couldn't see coming empties a shelf.
SAP and generic SCM tools model a clean supply chain: supplier, shipment, warehouse, done. Your London import operation post-Brexit doesn't look like that. Goods move through a customs broker, clear under specific commodity codes, attract duty that varies by origin and trade agreement, and face lead times that swing with port congestion and border checks. The off-the-shelf system has no real home for the customs layer, so it lives in broker emails, spreadsheets, and your team's heads.
That blind spot costs you. A shipment held at customs is invisible to the system until it's already late, and by then you're firefighting a stockout. Duty miscalculations surface as nasty surprises. Lead-time variability isn't modelled, so your planning assumes a certainty that the post-Brexit border doesn't offer. The supply chain tool gives you visibility right up to the point where, in London, the real risk now lives.
Why the usual tools struggle in London
- Customs broker handoffs and clearance status live in emails, invisible to SAP
- Duty varies by origin and trade agreement and gets calculated outside the system
- Post-Brexit lead-time variability isn't modelled, so planning assumes false certainty
- A shipment held at customs becomes visible only once it's already late
What a custom supply chain build changes
A London importer's supply chain has a customs and broker layer post-Brexit that generic SCM was never designed to model. Custom supply chain software brings that layer into the system: broker handoffs and clearance status tracked live, duty calculated by origin and trade agreement, and lead times modelled with the real variability the border introduces. You see a customs hold while you can still react, not after the shelf is empty. The blind spot where your actual risk now lives finally has instrumentation.
The features that matter for London
Supply Chain services we deliver in London
Digital Heroes builds the full supply chain stack for London teams. Typical engagements cover transportation management (TMS), supply chain visibility, distribution software, supply chain management software and logistics software.
- Customs and broker handoffs are managed in emails and spreadsheets outside SCM
- Duty miscalculations and surprise costs keep appearing at clearance
- Lead-time variability from the border breaks your planning assumptions
- Customs holds become visible only after they've caused a stockout
- Your supply chain is domestic or doesn't cross customs borders
- Generic SCM gives you the visibility you actually need
- Duty and broker complexity isn't a meaningful part of your operation
- Volume and risk don't justify modelling the customs layer in custom software
Supply Chain pricing in London: the real numbers
| Project scope | Typical cost | Timeline |
|---|---|---|
| Custom customs and lead-time layer over existing SCM | £70k to £120k | 5 to 7 months |
| Full custom supply chain platform with customs modelling | £140k to £200k | 7 to 9 months |
| Customs-clearance tracking and duty module only | £55k to £95k | 4 to 5 months |
From kickoff to launch: the schedule
Exactly what you get
Supply chain software that sees through to where your risk now lives: the post-Brexit customs layer. Broker handoffs and clearance status tracked live, duty calculated by commodity code and trade agreement, and lead times modelled with the variability the border actually introduces. A customs hold raises an alert while you can still re-route or expedite, not after the shelf empties. You get one picture of the chain through to clearance, replacing the broker emails and spreadsheets where that knowledge currently hides.
How to choose a developer in London
Hire a team that understands post-Brexit customs and trade logic, not just warehouse-to-warehouse SCM, because that customs layer is the whole point. Ask how they'd cost a shipment from a new origin under a specific trade agreement, and how they'd surface a customs hold early. A partner who stops modelling at the border has missed your actual problem. Connect the build to your inventory management software, warehouse management system, and ERP (Enterprise Resource Planning) so customs, stock, and finance share one view of every shipment.
- Live customs clearance and broker-handoff status inside the system, not in emails
- Duty calculated automatically by origin and trade agreement, ending surprise costs
- Lead times modelled with post-Brexit variability so planning reflects reality
- Early warning on customs holds while you can still re-route or expedite
- One picture of the supply chain through to clearance, not just to the border
- Modelling customs and trade-agreement logic is complex and drives cost
- You own the duty and tariff rules as trade agreements change
- Integration with broker systems and carriers is where most project risk sits
- If your supply chain is domestic or simple, generic SCM is the right, cheaper tool
- !They model the chain only to the warehouse; ask how they handle customs clearance
- !No duty or trade-agreement logic; ask how they cost a shipment from a new origin
- !Broker integration is hand-waved; ask which broker systems they've connected
- !Lead times are treated as fixed; ask how they model border variability
- !Quote without mapping your import flow; ask for a supply-chain audit first
Most London teams pricing supply chain end up comparing notes on project management, helpdesk & ticketing, crm too; the systems share one data spine.
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 doesn't SAP handle our customs problem?
SAP and generic SCM model the chain from supplier to warehouse but treat customs as a black box. Post-Brexit, the customs layer, broker handoffs, duty, clearance delays, is where London importers carry the most risk, and it ends up in emails and spreadsheets. Custom software brings it into the system.
How does the software give early warning on customs holds?
By integrating with broker and carrier systems to track clearance status live, so a held shipment raises an alert while you can still react, re-routing, expediting, or adjusting orders, rather than discovering it once the goods are already late.
Can it calculate duty automatically?
Yes. The system calculates duty by commodity code, origin, and applicable trade agreement, replacing the manual, error-prone calculations that currently produce surprise costs at clearance. As trade agreements change, the rules are updated centrally.
Do we need to replace our existing SCM?
Often not. A custom customs and lead-time layer can sit over your existing SCM, adding the post-Brexit visibility it lacks while keeping the rest of your supply chain tooling. Full replacement only makes sense if the base system is itself the constraint.