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Company No. NI017799 · Incorporated 14 Sep 1984

HSL Compliance (Northern Ireland) Limited

Registered name: HSL COMPLIANCE (NORTHERN IRELAND) LIMITED

Part of Mariner Topco Limited group

HSL Compliance (Northern Ireland) Limited does not publish its revenue or profit. Its accounts to 31 Dec 2024 show net assets of £1.3m and 28 employees.

HSL Compliance (Northern Ireland) Limited did not publish its revenue or profit — small companies aren’t required to file a profit & loss account. Its accounts for the year to 31 Dec 2024 showed net assets of £1.3m and 28 employees. The company is classified under “remediation activities and other waste management services” and is based in Belfast; we hold 3 years of its filed accounts.

Balance sheet onlySection E · Water supply, sewerage and waste managementSIC 39000Remediation activities and other waste management services
Status
Active
Location
Belfast, Northern Ireland
Age
42 yrs · since 1984
Type
Private Limited Company

Part of a group. The filing indicates this company sits within a group structure, so its results may depend on intra-group trading and it may be hard to replicate independently.

Latest accounts · year to 31 Dec 2024

Key figures

Boring industry

Revenue not disclosed

HSL Compliance (Northern Ireland) Limited’s accounts for the year to 31 Dec 2024 contain a balance sheet but no profit & loss account, so its revenue and profit are not public. UK small and micro-entity companies are not required to publish a P&L — this is normal and says nothing about how the business is performing.

We never estimate revenue. Below you’ll find the balance-sheet figures that were filed — useful as indirect signals of momentum, but they are not revenue or profit.

Employees
28
Net assets
£1.3m

Badges are automated estimates derived from the filed figures — not statements of fact about the company.

3 filed years

Financial history

Multi-year financials, oldest to newest
Year to30 Apr 202331 Dec 202331 Dec 2024
DisclosureNo P&LNo P&LNo P&L
Profit & loss
Revenue (turnover)———
Profit (best available)———
Employees (average)232728
Ratios
Profit margin———
Balance sheet — indirect signals, not revenue
Cash at bank£841k£600k£802k
Net assets£2.2m£593k£1.3m
Fixed assets£51.1k£58.4k£42.9k
Current assets£2.8m£1.6m£2.4m
Debtors£1.9m£756k£1.3m
SourceAbridgedAccounts · bulk data Feb 2025AbridgedAccounts · bulk data Feb 2025AbridgedAccounts · bulk data Sep 2025
Indirect — not revenue

Balance-sheet signals

Year-on-year changes in filed balance-sheet items. They can hint at momentum (or investment) but are not revenue or profit and must not be read as such.

Net assets
—
Now £1.3m
Cash at bank
—
Now £802k
Headcount
—
Now 28
Deferred income
—
Now —
Fixed assets
—
Now £42.9k
Corporate ownership

Group structure

Ownership chain

  1. Mariner Topco Limitedultimate parent75–100%
  2. Mariner Midco 1 Limited75–100%
  3. Mariner Midco 2 Limited75–100%
  4. Mariner Bidco Limited75–100%
  5. HSL Compliance Group Limited75–100%
  6. HSL Compliance Holdings Limited75–100%
  7. HSL Compliance (Northern Ireland) Limitedthis company

Bands show the share of ownership each company holds in the one below it.

Sister companies (16)

From the Persons with Significant Control register (corporate controllers only).

Same industry, similar size

Similar profitable businesses

Industry benchmarks →

Sources

Companies House profile Filing history & original accounts

Latest figures from AbridgedAccounts for the year to 31 Dec 2024, from the Companies House accounts bulk data published Sep 2025. Spotted an error? Request a correction.

Updated from Companies House on 14 Oct 2026

Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.