London · Manchester · Birmingham · Leeds
ERP & CRM Software Development in the UK
For UK businesses the accounting package is fixed: VAT returns go through Making Tax Digital-compatible software. So the ERP's job is to run operations and hand clean, VAT-coded transactions to Xero or Sage — not to become a second ledger.
We deliver custom ERP systems, bespoke CRM software and CRM implementation for companies in London, Manchester, Birmingham and Leeds — remotely from our Karachi office, in your working hours, at a fixed written price.
Short answer
A2Z Global builds custom ERP and CRM systems for UK businesses that feed Making Tax Digital-compatible accounting software such as Xero, Sage or QuickBooks, with 20% VAT handled correctly and personal data treated under UK GDPR. Delivery is by an offshore team in Karachi whose working day overlaps your morning, with fixed quotes and phased releases.
Key takeaways
- The order modules are built in matters more than which modules you choose.
- Clean master data — customers, products, suppliers — is the foundation every module depends on.
- Invoicing has to be designed for the country's tax and e-invoicing rules from the start, not adapted later.
- Delivery is phased: one module in daily use before the next begins.
/Building for UK
What an ERP for the UK has to handle
The details that make erp & crm systems for the UK different from anywhere else — and that we plan for before the first screen is designed.
| What changes | In the UK |
|---|---|
| Tax | VAT is charged at a standard rate of 20% and administered by HMRC. |
| E-invoicing | There is no mandatory B2B e-invoicing in the UK today, but Making Tax Digital requires VAT-registered businesses to keep digital records and file VAT returns through compatible software — so an ERP has to feed an MTD-compatible accounting system cleanly. |
| Accounting software we integrate | Xero, Sage, QuickBooks |
| Language | English. |
| Data and privacy | UK GDPR and the Data Protection Act 2018 govern personal data, supervised by the ICO. Cookies and marketing consent fall under PECR, which is why a UK site needs a real consent banner rather than a notice. |
| Pricing | Priced per project. You get one fixed written quote after a discovery call. |
/How we work with you
Working with a team outside the UK
Delivered by the A2Z team from our Karachi office. You get a named point of contact, calls on WhatsApp, Zoom or Teams, a written scope before work starts, and a working link you can open while we build.
Pakistan is 4 to 5 hours ahead of the UK depending on daylight saving, so your whole morning and early afternoon overlaps our working day.
/Included
What you get
- Custom ERP/CRM modules
- Role-based portals & dashboards
- Third-party integrations (accounting, email, logistics)
- Data migration & training
/Guides
Read before you hire: erp & crm systems
- ERP & SystemsOdoo Standard vs Custom: When to Stay Standard, When to Customise Odoo, and When to Build InsteadWhat standard Odoo actually includes, the four levels of customisation from configuration to custom modules, what each level costs at every upgrade, and a simple way to decide how far to go before a custom build makes more sense.Read
- Custom SoftwareHow to Write a Software Requirements Document Before You Hire a DeveloperWhat to put in a software requirements document so developers can quote accurately: goals, users, current process, data, integrations, reports and limits, with a section-by-section template.Read
- Custom SoftwareFixed Price vs Time and Materials: Which Contract Suits Your Software Project?How fixed-price and time-and-materials software contracts work, who carries the risk in each, when each one fits, and the milestone-based middle ground most business systems end up using.Read
/Work
Projects for the UK
/FAQ
ERP & CRM Systems in UK: common questions
Does it work with Making Tax Digital?
Through your accounting software. The ERP passes VAT-coded sales and purchases to an MTD-compatible package such as Xero, Sage or QuickBooks, which files the return.
How is customer data handled under UK GDPR?
With role-based access, data kept only as long as needed, and documented processing, so you can meet your obligations as data controller.
Can it handle Direct Debit for recurring customers?
Yes, through GoCardless, with payment status flowing back into customer accounts.