Odoo Gold Partner — Migration & upgrades
Odoo Migration in the UK
Our UK office in Nelson, Lancashire serves clients across the UK and Ireland. Senior consultants with VAT, MTD (Making Tax Digital), and post-Brexit-trade-rules expertise. UK-based engagements run in GBP with VAT-aware pricing.
Delivered from our Nelson office.
Last reviewed:
What's included in Odoo migration for UK
Safe, hassle-free Odoo upgrades and migrations from SAP, QuickBooks, Tally, NetSuite, Microsoft Dynamics, or older Odoo versions. Zero data loss, minimal downtime, and a four-stream playbook (Data Migration → Module Migration → System Migration → Version Upgrades) delivered by an Odoo Gold Partner.
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Source-system audit
Read-only access to your current ERP. We document data structures, custom fields, integrations, custom code, and all the undocumented tribal knowledge.
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Data mapping
Field-by-field mapping from your source system to Odoo. Edge cases, legacy values, and data-quality issues are flagged for cleanup before cutover.
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Migration scripts
Idempotent migration scripts written in Python — re-runnable as many times as you need against staging before the production cutover.
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Process redesign
Many 'must-have' source-system features turn out to be workarounds for old problems. We map current processes to Odoo's defaults and flag where defaults are better.
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Custom feature port
Custom features in your source system get ported to Odoo only if they still solve a real problem. We don't recreate dead workflows just because they exist.
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Integration rebuild
Connectors to your CRM, payment gateway, e-commerce, and vertical SaaS rebuilt against Odoo's API. We re-test each integration end-to-end during UAT.
How we migrate you to Odoo in the UK
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Discovery + source audit — 2 weeks
Two-week deep dive into your current ERP — data, integrations, custom code, undocumented behavior. Output: a written diagnostic and risk register.
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Migration blueprint — 1–2 weeks
Field-level data mapping, custom-feature port list, integration rebuild plan, parallel-run plan, and cutover playbook. All signed off before build.
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Build and migration scripting — 8–14 weeks
Iterative two-week sprints. Migration scripts run against staging from week one. Custom features and integrations rebuilt in parallel.
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User acceptance testing — 2 weeks
Real-data UAT with the team running their actual workflows. Migration scripts re-run as many times as needed against staging until UAT passes.
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Parallel-run period — 2–4 weeks
Both old and new systems run side-by-side for 2–4 weeks. Daily reconciliation reports highlight any discrepancies. Issues fixed in scripts and re-run.
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Cutover and hypercare — 1 weekend + 90 days
Cutover weekend with rehearsed rollback. 90 days of post-launch hypercare from a dedicated team after the new system is live.
A typical mid-market migration runs 14–24 weeks end to end: 2 weeks audit, 1–2 weeks blueprint, 8–14 weeks build, 2 weeks UAT, 2–4 weeks parallel run, then cutover. The parallel-run period is non-negotiable — it's how we catch the data-quality issues that always surface only with real production transactions. Migrations from clean modern systems (NetSuite, Zoho) are faster than from legacy systems with 10+ years of accumulated edge cases (custom-built ERPs, old SAP installations). Multi-entity migrations are phased: lead market first, then expand.
UK compliance we configure out of the box
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Making Tax Digital (MTD) for VAT
Native MTD-compliant VAT submission via HMRC API. Quarterly VAT returns generated from Odoo, submitted directly to HMRC, with audit trail. Bridging-software setups for businesses transitioning from spreadsheet-based returns.
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VAT — UK and EU rules
Standard UK VAT rates (20% standard, 5% reduced, 0% zero-rated), exempt-supply handling, and partial exemption for businesses with mixed exempt + taxable activity. EU VAT rules for cross-border B2B (reverse charge) and OSS for B2C.
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Post-Brexit trade rules
GB → EU customs declarations, rules-of-origin tracking for preferential tariffs, NI Protocol handling for trade between Great Britain and Northern Ireland, and EORI-number management.
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Companies House filings
Annual accounts in iXBRL format for filing with Companies House, P11D / payroll year-end packs, and statutory disclosures. Auto-generation from Odoo with controlled review before submission.
Odoo Migration pricing in the UK
UK engagements are priced in GBP with VAT applicable (20% standard rate). Implementation engagements typically run £15,000 – £80,000 depending on scope; retainer engagements (Support, Hire-Developer) start at £1,200/month. Fixed-scope quotes are issued in GBP after a paid one-week discovery. Cross-border engagements (UK headquartered, EU subsidiaries) handled with multi-currency reporting.
What moves the price
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Source-system complexity
Migrating from a clean modern SaaS ERP is faster than from a 12-year-old custom system with no API and inconsistent data. We audit before quoting so you know what you're paying for.
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Data depth and history
Migrating master data + 12 months of transactions is fast. Migrating 5+ years of history with full reconcilability adds 2–4 weeks. We'll honestly tell you when older history is better off in cold storage.
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Custom feature port count
Each custom feature ported to Odoo carries an effort estimate. Our default is to port nothing and let the team try Odoo's defaults during UAT — most 'must-have' features turn out to be workarounds.
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Integration rebuild count
Each connector to a third-party system needs to be re-pointed at Odoo and re-tested. The cost depends on how the integration was originally built, not just the count.
See the full breakdown on Odoo pricing and implementation cost by country.
Odoo Migration in UK: frequently asked questions
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How much does an Odoo migration cost in the UK?
UK engagements are priced in GBP with VAT applicable (20% standard rate). Implementation engagements typically run £15,000 – £80,000 depending on scope; retainer engagements (Support, Hire-Developer) start at £1,200/month. Fixed-scope quotes are issued in GBP after a paid one-week discovery. Cross-border engagements (UK headquartered, EU subsidiaries) handled with multi-currency reporting. Every TechUltra engagement is fixed-price after a one-week paid discovery, so the number you sign is the number you pay for the agreed scope.
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How long does an Odoo migration take in the UK?
A typical mid-market migration runs 14–24 weeks end to end: 2 weeks audit, 1–2 weeks blueprint, 8–14 weeks build, 2 weeks UAT, 2–4 weeks parallel run, then cutover. The parallel-run period is non-negotiable — it's how we catch the data-quality issues that always surface only with real production transactions. Migrations from clean modern systems (NetSuite, Zoho) are faster than from legacy systems with 10+ years of accumulated edge cases (custom-built ERPs, old SAP installations). Multi-entity migrations are phased: lead market first, then expand. UK-specific compliance configuration (Making Tax Digital (MTD) for VAT, VAT — UK and EU rules) is built into the setup phase rather than bolted on at the end.
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Does TechUltra have a team in the UK?
Senior consultants based in Nelson plus rotating support from our Ahmedabad bench. The UK team is intentionally small and senior — every engagement gets a 5+ year specialist as lead. Delivered from our Nelson office.
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Are you HMRC MTD-compliant for VAT?
Yes — every UK Odoo implementation includes MTD-compliant VAT submission via HMRC's API. Quarterly VAT returns generate from Odoo with full audit trail, submit directly to HMRC, and include digital-link records. We've handled MTD transitions for businesses moving off Excel-based returns and bridging-software setups.
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Can you handle post-Brexit trade?
Yes — GB → EU customs declarations, rules-of-origin tracking for preferential tariffs (UK-EU TCA), Northern Ireland Protocol handling for GB→NI trade, EORI-number management, and inward-/outward-processing relief tracking. We've supported clients through Brexit-era trade-rule transitions on Odoo.
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How long does an Odoo migration take?
Mid-market migrations typically run 14–24 weeks end to end, including a 2–4 week parallel-run period before cutover. Migrations from clean modern systems (NetSuite, Zoho) are faster; migrations from legacy custom-built ERPs with 10+ years of history take longer. Multi-entity migrations are phased — lead market first, then expand to other countries.
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Will we lose data during the migration?
No data-loss events since 2016 across 100+ migrations. Migrations run via idempotent scripts against a staging environment first, with daily reconciliation reports during the parallel-run period to catch any discrepancies before cutover. The rollback plan is documented and rehearsed; we've used it twice and both rollbacks were successful.
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