Odoo Gold Partner — Migration & upgrades
Odoo Migration in London
TechUltra Solutions serves London businesses from our UK partner firm in Nelson, Lancashire — 2-hour train ride to London, same time zone. London's concentration of financial services, professional services, tech scale-ups, media + creative agencies, and the broader trading + import / export businesses makes it our largest UK city by volume. We handle UK MTD VAT, Companies House compliance, R&D tax credits accounting, and the multi-currency / multi-entity operations typical of London-headquartered groups.
TechUltra's Ahmedabad office with our UK partner firm in Nelson, Lancashire — a 2-hour train ride from London.
Last reviewed:
What's included in Odoo migration for London
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 London
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Discovery + source audit — 1 week
One-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: 1 week discovery and 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.
London compliance we configure out of the box
| Standard | What it requires |
|---|---|
| UK MTD VAT (Making Tax Digital) | HMRC-recognised MTD VAT submission. Native VAT return generation with intra-Community supplies handling (NI protocol where applicable), reverse charge, partial exemption. |
| Companies House + statutory accounts | FRS 102 / FRS 105 / IFRS-compatible chart of accounts. Companies House filing-ready data (CT600, abridged accounts, full accounts). |
| R&D tax credit accounting | R&D expense classification per HMRC categories, R&D tax credit calculation data, audit-ready documentation for HMRC R&D claim review. |
| UK PAYE + pension auto-enrolment | Native UK Payroll on Enterprise — PAYE, National Insurance, pension auto-enrolment (NEST, Smart Pension, others), P11D handling. |
Odoo Migration pricing in London
Every London project is priced to its scope. Cost depends on entity count, modules, integrations and Making Tax Digital VAT setup. You get a fixed price after discovery, in GBP, before any build starts. Odoo Enterprise Custom licensing for 50 users is a separate GBP 17,000/year (USD 21,000/year).
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 London: frequently asked questions
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How much does an Odoo migration cost in London?
Every London project is priced to its scope. Cost depends on entity count, modules, integrations and Making Tax Digital VAT setup. You get a fixed price after discovery, in GBP, before any build starts. Odoo Enterprise Custom licensing for 50 users is a separate GBP 17,000/year (USD 21,000/year). Every TechUltra engagement is fixed-price after a one-week 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 London?
A typical mid-market migration runs 14–24 weeks end to end: 1 week discovery and 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. London-specific compliance configuration (UK MTD VAT (Making Tax Digital), Companies House + statutory accounts) is built into the setup phase rather than bolted on at the end.
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Does TechUltra have a team in London?
A named TechUltra lead with Ahmedabad engineering depth, plus senior consultants at our UK partner firm. Native English delivery. Implementation lead, technical lead, project manager dedicated. UK-experienced consultants handle HMRC + Companies House workflows directly. TechUltra's Ahmedabad office with our UK partner firm in Nelson, Lancashire — a 2-hour train ride from London.
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Do you have a London office?
Not directly in London — we deliver from our UK partner firm in Nelson, Lancashire (2-hour train to King's Cross / Euston). On-site London visits are routine during active engagements; we'd typically be on-site weekly to bi-weekly during configuration and training phases.
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Can you handle UK MTD VAT?
Yes — HMRC-recognised MTD submission native in Odoo. We've taken multiple businesses through their first MTD-VAT-on-Odoo filing without issues.
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What do Odoo migration services include?
A read-only audit of your current ERP; field-by-field data mapping with quality issues flagged before cutover; idempotent Python migration scripts you can re-run against staging; a decision on each custom feature (port it or let Odoo's default replace it); integrations rebuilt against Odoo's API and re-tested in UAT; a 2–4 week parallel run with daily reconciliation; a rehearsed cutover with a documented rollback; and 90 days of hypercare. The price is fixed after a one-week discovery.
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Do we need a migration or an Odoo upgrade?
If you are leaving another system (SAP Business One, NetSuite, Dynamics, Tally, Zoho, QuickBooks, Sage, a custom ERP), it is a migration and this page applies. If you are already on Odoo 15–19 and want Odoo 20 while keeping your build, it is a version upgrade: the database moves through each version in order and your custom modules are ported. See Odoo upgrade services, or size it yourself on odooupgrades.com, our dedicated upgrade site, which also handles Odoo 8–15. Both start with the same one-week discovery, so you do not have to decide before talking to us.
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