Sls Construction (Southern) Ltd · Company 06768980 · Trading heritage since 2009
Active, accounts up to date·subcontractor & supplier·Head office Southampton
SLS Construction (Southern) Ltd, established in 2009, specialises in supplying skilled labour, plant, and materials for civil engineering and groundworks projects across Southern England. The company was founded by Richard Allen, who drew on his 15 years of experience with major UK construction firms to address issues of reliability, service, and skillset shortages in labour supply. They offer a comprehensive groundworks service, including foundations, drainage, and external works, structuring packages to suit client needs whether labour-only or a full subcontract arrangement.
SLS emphasizes proactive planning, resourcing, and project management, with supervisors on-site to ensure smooth operations and timely issue resolution. Their services extend to maintenance contracts for main contractors, covering a wide range of repair and reinstatement activities in public realms and managed highway networks. SLS Construction is committed to understanding client requirements from day one, with rigorous onboarding processes and regular site visits to ensure contracts perform to expectation.
They also invest in regular training for their operatives to help develop their careers, addressing the growing skills gap in the industry. Their approach focuses on providing a single point of accountability for groundworks packages, simplifying coordination and programme management.
SLS delivered a £400,000 groundworks subcontract across three school-term phases, covering drainage, piling, RC ground beams, substructure blockwork, and external finishing works for a new 6th form block at Forest Bridge School.
Client · Evolution 5 Ltd
Woking
SLS delivered an ongoing maintenance subcontract for Mountjoy in Woking, covering brickwork, kerbing, drainage, and carriageway and footway repairs.
Client · Mountjoy
Appointed as the groundwork subcontractor for a basement construction project.
Delivering site engineering services from setting out - to survey control.
Hampshire and West Sussex
Teams out on three live contracts.
Labour supply on a project.
A Section 278 completion in Lancing, training.
Balfour Beatty, Mountjoy, Evolution 5 Ltd.
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SLS Construction (Southern) Ltd provides skilled labour, plant, and materials for civil engineering and groundworks projects across Southern England. Established in 2009, they focus on reliability and efficiency. Their listed services include Civil engineering, Groundworks, Drainage, Road surfacing and Plant hire.
SLS Construction (Southern) Ltd is registered at 33a Portsmouth Road, Southampton, SO19 9BA, in South East.
SLS Construction (Southern) Ltd states that it works across Southern England, Hampshire, West Sussex, Surrey, South Of England and England.
Accounts filed for the year to 2025 report 3 employees, which places the company in the 1-9 employees band.
Companies House lists SLS Construction (Southern) Ltd as active, with accounts most recently made up to 2025-05-31.
SLS Construction (Southern) Ltd displays Constructionline and SSIP on its website.
SLS Construction (Southern) Ltd works in Infrastructure and Public.
SLS Construction (Southern) Ltd was incorporated on 2008-12-09, though the company says it has traded since 2009.
Track budgets, committed costs, invoices and profitability in one place, so cost issues show up before they turn into margin surprises.