We have successfully migrated over 1,000 sites in the UK, Ireland and further afield
Coretime Migration Services - your data, our expertise
Transitioning to a new system can feel daunting, but with Coretime, you are in safe hands. We have refined our migration process over the years to ensure your historical data is preserved and your new system is ready for action from day one.
The Coretime Advantage
Proven Track Record
Technical Expertise
Whether you’re moving from Excel spreadsheets, SQL databases or complex legacy systems, chances are we’ve done something similar so can advise you accordingly
Flexible Handholding
Whether you want a ‘done for you’ service or just need us to check your work, we offer as much or as little handholding as you like
The Coretime Migration Process
We import your data with a proven approach that has been tested and refined over time.
Structured Data Templates
To ensure accuracy, we provide easy to use spreadsheet templates. These allow you to organise your data into a format that maps perfectly into Coretime, eliminating errors before they happen. If you can provide the data in this template, there will be no charge for the data upload.
Static & Transactional Data
We don’t just move your Contacts. We can migrate both your static and transactional data:
• Static data: Clients, Projects, Sub Projects, Budgets, opening balances and Employees
• Transactional data: historical timesheets, expense items and invoices ensuring your reporting continuity remains unbroken
Seamless Accounts Integration
We can also pull in data from your accounts system to help accelerate your go live process. Customers, Suppliers, Nominal Codes and Departments can all be imported. For more information on the accounts systems we integrate with please see our Accounts page.
Modularity: Land and Expand
You don’t have to do everything at once. Our ‘land and expand’ philosophy allows you to:
• Start small: focus on the core modules that offer the biggest wins first
• Grow at your pace: add functionality and modularity as your business evolves
GWP’s rollout of Coretime followed a typical implementation path.
Coretime helped GWP migrate historical timesheet data, align project and billing structures, and get staff up and running quickly with training and permissions in place. Within weeks, the team had moved away from manual forms, with better visibility of hours, budgets and profitability.
Ready to make the move?
Join the 1,000+ businesses that have trusted Coretime with their Professional Services Automation journey.
Latest resources
View all our resources06 May 2026
The Power of Integrated Time Tracking and CRM for Professional Services
Integrating time tracking with CRM gives professional services firms a complete view of clients, projects, and profitability in one place.
21 Apr 2026
Best Top 5 Consulting Software for 2026
Explore the top consulting software for 2026, comparing the best tools for project management, time tracking, billing, and resource planning to help consulting firms work smarter and grow profitably.
13 Apr 2026
The Hidden Cost of Manual Expense Management in Professional Services
Manual expense management is quietly draining profitability for professional services firms. From lost receipts and delayed approvals to billing errors and wasted admin time, outdated processes create hidden costs that impact cash flow, compliance, and project visibility.
You’re in good company
Join the growing number of businesses transforming their operations with Coretime, starting from just £20/€25 per user per month. Our customers are strengthening client relationships, gaining real-time project visibility, and driving measurable growth.
Explore their success stories below and see how Coretime can deliver powerful results for your organisation at a price that makes sense.
Aircraft Leasing & Management
We have recently purchased Coretime through Onesys and were impressed with their responsiveness to our original enquiry and to our subsequent questions. The process for understanding what the software could do for us was efficient and straightforward, as was the administration involved in setting-up the account and finalising the agreement.
Nicola Plummer
Aircraft Leasing & Management
AJA Architects
For us, the main benefit is that our system is now more user-friendly in terms of project managers being able to access information, such as seeing how a project is performing against budget. They can analyse how time is being spent and what proportion of it is earning fees – it’s easy to translate.
Matt Simpson
AJA Architects
Callisto Consulting
Since purchasing Coretime our time spent on administrative tasks, especially around invoicing has greatly reduced. We can also now respond to Client queries much more efficiently and with a more accurate, trusted response.
Overall the processes that we undertake using Coretime are much quicker and simpler and along with the benefits we’re now receiving in how we can report on our Project data using different parameters, we expect to see a return on investment within a year based on administration time saved.
Paul Bunyan
Callisto Consulting
R.G. Parkins & Partners
The Coretime system is easy to use, accurate, and has helped to increase our efficiencies, we would absolutely recommend it to other companies in that we find it invaluable.
David Heron
R.G. Parkins & Partners
GWP Engineering Consultants
Coretime are a real business partner, I find them very helpful, and if I have any questions or queries the support team is there to help me instantly. In short, we’re delighted.
Amanda Godwin
GWP Engineering Consultants
Caulmert
With staff based at different office locations and sometimes different parts of the world, having Coretime has brought us all together using one easily accessible web based system.
Donna Milne
Caulmert
JNP Group
Coretime is one of the most important packages within the business and is based on an annual subscription with full cloud access. This is a truly fantastic system and very affordable for a company of our size, it’s a fraction of the cost of some systems such as Autodesk and Microsoft.
Jamie Seabrook
JNP Group
Deaton Lysaght
Coretime is simply the easiest, yet the most economically advantageous programme that does so much more than just time management. The overall impact of Coretime has improved both productivity and efficiency.
Elizabeth Churchard
Deaton Lysaght
Pete Stead – P+HS Architects
A huge positive for us is the reduction of double entry of information, not having to manipulate information and enter it somewhere else has made such a drastic difference to how we run our business, we can’t imagine not having Coretime now!
Pete Stead – P+HS Architects
Spark Architects
We will be able to easily track non-billable work such as fee proposals and revisions, track outstanding invoices versus paid, and understand budget versus actuals and profitability at both project level and RIBA stages.
Spark Architects
Wildfowl & Wetlands Trust
It’s cut the time spent on routine administrative tasks and enabled us to be more efficient, which means we can focus more on the actual projects. We can have around 20 live projects on the go at any one time and if a client wants a breakdown of where the time is going, we need to respond almost instantly.
Monica
Wildfowl & Wetlands Trust