About HotelSolutionsMod
Mersey Software Ltd trades as your PMSAddons: a Liverpool-based vendor working exclusively on the hotel-software ecosystem for UK independent hotels and small groups.
Instead of asking anyone to replace their PMS, we deepen it — wider distribution surfaces, sharper pricing decisions, cleaner guest communication — while your PMS stays untouched as the system of record.
Everything connects over the official interface using scoped credentials created inside your own environment; our team holds no PMS logins and needs none.
We are a limited company registered in England, registered with the ICO, and we publish our DPA, retention schedule and sub-processors in plain sight — because trust should be verifiable.
Company details
Mersey Software Ltd trading as HotelSolutionsMod
Company No. 13492871 · registered in England & Wales (Companies House, Cardiff)
4th Floor, 14 Castle Street, Liverpool L2 0NE, United Kingdom
Directors: Helena Marsh, Daniel Croft
Small team, senior people
No account managers or ticket mazes — you speak directly with the engineers who build and maintain the modules.
API-first respect
We never ask for database access or admin passwords. Everything runs through your platform's official API with scoped keys you can revoke.
UK accountability
Mersey Software Ltd is registered in England & Wales and follows the UK GDPR and the Data Protection Act 2018. Contracts are simple, and there are no lock-ins.