Registered in England & Wales · No. 13766203

Payroll & Back Office,
Run Properly.

OMI ENT Ltd manages payroll, HMRC submissions and day-to-day back office administration for UK employers, agencies and contractors — accurately, on time, and without the in-house overhead.

Talk to Our Team View Payroll Models

100%

RTI / HMRC Compliant

Payroll Models Supported

Nationwide Service

Who We Are

The Admin Engine Behind Your Business.

OMI ENT Ltd provides payroll processing and back office support to small and medium-sized businesses, recruitment agencies and contractors across the United Kingdom. We take on the recurring administrative work that slows businesses down — payroll runs, HMRC filings, payslips, pension submissions and routine office administration — and deliver it accurately, on schedule, every time.

We work as an extension of your team rather than a faceless processing centre. Whether you need a single weekly payroll run managed end-to-end or ongoing back office support across multiple functions, our approach stays the same: understand how you operate, fit around it, and remove the admin burden without adding complexity.

Accuracy First

Every payroll run is checked before submission — fewer queries, fewer corrections, fewer surprises.

On-Time, Always

Payslips, payments and submissions land when they're supposed to — every cycle, without chasing.

HMRC Compliant

RTI submissions, pension duties and statutory reporting handled correctly as standard practice.

A Named Contact

Speak to the person who actually runs your payroll — not a ticket queue or call centre.

What We Do

Two Services.
Built to Work Together.

Payroll and back office administration sit close together in every business — we handle both, separately or combined, around your existing setup.

01 · PAYROLL

Payroll Processing & HMRC Submissions

End-to-end payroll runs covering gross-to-net calculations, payslip generation, RTI submissions to HMRC, pension contributions and year-end reporting — managed on weekly, fortnightly or monthly cycles to suit your business.

RTI Filing Payslips Pensions P60 / P45

02 · BACK OFFICE

Back Office & Administrative Support

Day-to-day administration that keeps a business running — timesheet processing, invoice preparation, record keeping, document management and correspondence — handled accurately and returned to a schedule you control.

Timesheets Invoicing Records Admin Support

03 · AGENCIES

Payroll Bureau for Agencies & Umbrellas

High-volume payroll processing for recruitment agencies and umbrella operators — multiple pay cycles, multiple worker types and large payslip runs, processed with the same accuracy as a single-employee payroll.

Multi-Site Bulk Payslips Reporting Reconciliation

Engagement Models

Whichever Way Your
Workforce Is Paid.

UK payroll isn't one-size-fits-all. We process payroll correctly under every common engagement model — and can run several side by side where a business uses a mix of worker types.

PAYE

PAYE Employment

Standard employed staff payroll — tax and National Insurance deducted at source, with RTI reporting to HMRC each pay run.

UMB

Umbrella PAYE

Payroll for contractors employed through an umbrella arrangement — assignment pay processed under standard PAYE with full statutory entitlements.

CIS

CIS (Construction)

Subcontractor payments processed under the Construction Industry Scheme, with correct CIS deductions calculated and reported to HMRC.

LTD

Limited Company / PSC

Director payroll for personal service companies — salary and dividend-friendly PAYE runs aligned with wider tax planning.

Self-Employed Payments

Structured payment processing for genuinely self-employed workers, with clear records maintained separately from PAYE payroll.

48h

Avg. Onboarding

How It Works

Set Up Once.
Run On Schedule.

Tell Us How You're Set Up

We review your current payroll structure, worker types, pay frequencies and any existing systems or spreadsheets in use.

We Build the Schedule

A pay calendar and submission schedule is set up around your cut-off dates, with HMRC and pension registrations confirmed.

Data In, Payslips Out

You send hours, timesheets or variations each cycle; we process, calculate and return payslips and reports to you for approval.

Submitted & Filed

RTI submissions, pension contributions and statutory reports are filed on time, with copies retained for your records.

Compliance, Handled

The Filings That Can't Be Missed.

Payroll compliance in the UK covers more than tax deductions. We manage the full set of statutory obligations that come with paying people correctly.

HMRC & RTI

Real Time Information submissions each pay run
PAYE scheme registration and management
Year-end reporting and P60 issue
Starter and leaver processing (P45)

Pensions

Automatic enrolment assessment each cycle
Contribution calculation and submission
Opt-out and opt-in processing
Re-enrolment cycle management

CIS & Subcontractors

Subcontractor verification with HMRC
Correct CIS deduction rates applied
Monthly CIS returns filed on time
Statements issued to subcontractors

Records & Reporting

Secure digital payslip distribution
Payroll reports for your accountant
Audit-ready records retained
GDPR-aligned data handling

Client Feedback

What Clients Say About Working With Us.

Switching our weekly payroll over took less effort than we expected. The cut-off process is simple, payslips arrive on time every week, and queries get answered the same day.

Office Manager

Construction SME

We run a mix of PAYE and CIS subcontractors and previously this was a constant headache. OMI ENT now handles both correctly, with returns filed on time every month.

Finance Director

Recruitment Agency

Beyond payroll, having someone manage timesheets and invoicing each week has freed up a huge amount of admin time for our small team. Genuinely straightforward.

Operations Lead

Logistics Business

Payroll & Back Office, Run Properly.