Global HR Platform With UK Depth
The short answer
A global HR platform with genuine UK depth is rare — most platforms are strong globally but shallow on UK-specific compliance, or strong on the UK but single-country. Mellow is built UK-first and has expanded to six countries, so it offers UK depth — ERA 2025, IR35, direct HMRC RTI, tribunal risk — alongside native payroll for Ireland, the US, the UAE, India, and Australia.
The usual trade-off
When businesses look for HR software, they tend to face a choice.
A global platform covers many countries but treats each one broadly. It will run UK payroll, but it is unlikely to deeply understand the Employment Rights Act 2025, IR35 status determination, or UK tribunal risk. The UK is one row in a large spreadsheet.
A UK-specialist platform has real depth in UK compliance but stops at the border. The moment you employ someone in Ireland or the US, it cannot help.
Most platforms sit firmly in one camp. Few offer both.
How Mellow combines the two
Mellow was built UK-first. That heritage shows in its UK depth:
- ERA 2025 compliance — the Employment Rights Act 2025 changes tracked and built in, including day-one SSP, the 12.07% holiday-pay method, and the flexible-working day-one request workflow, with Predictive Compliance mapping each change to the modules and policies it affects.
- IR35 determination — a status-determination engine for contractor and off-payroll working.
- Direct HMRC RTI — Real Time Information submitted directly to HMRC via GovTalk XML.
- Tribunal risk scoring — early flagging of employment situations that carry tribunal risk.
- Bradford Factor — automated absence scoring with configurable thresholds.
Mellow then extended this same platform to five more countries — Ireland, the USA, the UAE, India, and Australia — with native payroll in each. The UK depth was not diluted to go global; the global coverage was added around it.
Who this suits
This combination suits a UK-headquartered business that has expanded, or is expanding, into a few other countries. You keep the UK compliance depth you need at home, and you gain native payroll for the countries you have grown into — all in one platform, at one published price.
The honest scope
Mellow covers six countries, not the whole world, and it does not provide Employer of Record. A business operating in dozens of countries needs a broader platform. But for a UK business with a handful of international entities, a platform with real UK depth and genuine multi-country payroll is exactly the right shape.