Complete Site Services
Complete Site Services is a UK-based civil engineering, groundwork, and manpower subcontractor serving construction companies, property developers, and rail infrastructure projects including HS2 and Crossrail, supplying certified personnel and integrated site services.
- Company typePrivate
- Founded-
- HeadquartersLondon, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Complete Site Services does
Complete Site Services (CSS) is a UK-based private subcontractor providing civil engineering, groundwork, and manpower solutions to construction companies, property developers, and rail infrastructure clients. The company operates three integrated service lines: groundworks (hard and soft landscaping, drainage, concrete works, form works, and structural repairs), manpower provision (single contractor supply through to full subcontracting packages), and specialist rail recruitment (supplying PTS, SMSTS, and CSCS-certified personnel for major projects including HS2 and Crossrail). Revenue is generated through project-based, quote-priced contracts with PAYE-employed personnel receiving company pension benefits. Distribution is direct B2B via website enquiries, referrals, and direct outreach, with the company positioned as a one-stop solution from initial planning through project completion. The firm is founder-led by Mark Kirchner, who brought 25 years of construction industry management experience to the business, and operates from a single London headquarters with project delivery extending to Birmingham.
Complete Site Services firmographics
Firmographics- Name
- Complete Site Services
- Legal name
- Complete Site Services
- Website
- https://completesiteservices.co.uk
- Company type
- Private
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Complete Site Services is a UK-based civil engineering, groundwork, and manpower subcontractor serving construction companies, property developers, and rail infrastructure projects including HS2 and Crossrail, supplying certified personnel and integrated site services.
- Ownership category
- akta.pro rank
Complete Site Services industry classification
Industry- Product category
- Construction Subcontracting Services
- NAICS
- Site Preparation Contractors (23891), Site Preparation Contractors (238910), Other Heavy and Civil Engineering Construction (237990)
- SIC
- Heavy Construction Other Than Bldg Const - Contractors (1600), Construction - Special Trade Contractors (1700)
- akta.pro primary industry
- Trenching & Utility Excavation (IMAFAKAD)
- akta.pro secondary industry
- Site Access & Temporary Roads / Working Platforms (IMAFAKAO)
Keywords
Where Complete Site Services is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Complete Site Services business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Others
Revenue model
- Civil Engineering & Groundwork Subcontracting: The company provides civil engineering and groundwork services as a sub-contractor to major construction companies and property developers. Revenue is generated through project-based contracts of varying sizes, from small private contractor jobs to large infrastructure projects.
- Manpower & Staffing Provision: Supply of qualified construction personnel ranging from single contractors to full subcontracting packages. Services include supply of trained personnel for civil works, surveying, and specialized rail work. Staff are employed under PAYE with company pension benefits.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Custom project-based pricing |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels3 records
Complete Site Services product offering
Product offeringCore offering
Complete Site Services provides civil engineering and groundwork subcontracting (landscaping, drainage, concrete works, structural repairs) and supplies qualified construction personnel (from single contractors to full subcontracting packages) to main contractors, property developers, and rail infrastructure projects. The company operates as a B2B subcontractor, with PAYE-employed staff holding certifications such as CSCS, SMSTS, and PTS, and has delivered work on major UK projects including Crossrail and HS2.
Product overview
Complete Site Services is a construction services company offering an integrated portfolio of services across three core areas: Groundworks and Civil Engineering (including landscaping, drainage, concrete works, and structural repairs), Manpower Services (supplying single contractors to full subcontracting packages), and Rail Recruitment (specialist personnel for rail infrastructure projects). The company positions itself as a one-stop solution, capable of supplying personnel and services from initial planning through to project completion, with experience on major projects including Crossrail and HS2.
Differentiator
Problem solved
Functional benefit
Products and services
- Groundworks & Civil Engineering Civil engineering and groundwork services delivered as a subcontractor, covering hard and soft landscaping, drainage, soft pads, entrances, reinstatements, concrete works, form works, and structural repairs and alterations. Targeted at main contractors and property developers requiring experienced groundworks delivery on commercial construction projects.
- Manpower Services Supply of qualified and experienced construction personnel to projects, ranging from a single contractor to a full subcontracting package. Personnel are employed under PAYE with company pension benefits, and hold required industry certifications. Targeted at construction firms needing flexible, certified workforce capacity.
- Rail Recruitment & Vacancies Specialist rail subcontractor service supplying professionally qualified personnel across a broad range of trades for rail infrastructure projects, with active vacancies for roles such as Black Hat Supervisor, Surveying Works Coordinator, and Land Assistant Surveyor on HS2. Targeted at rail infrastructure primes and specialist rail subcontractors.
Companies that use Complete Site Services
Customer profileNamed customers3 records
Segments3 records
Ideal customer profiles3 records
Complete Site Services technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Complete Site Services partnerships and signals
Strategic signalScale indicators1 record
Recent moves3 records
Expansion highlights3 records
Complete Site Services competitors and assessment
Company assessmentBroad incumbents
- Balfour Beatty: Tier-1 UK infrastructure group delivering rail (including HS2), highways, and utilities — relevant as a customer and broader incumbent shaping the subcontractor market in which CSS operates.
- Costain Group: UK infrastructure contractor with significant rail, highways, and utilities exposure including HS2 — a major tier-1 client and competitor in the subcontractor ecosystem CSS serves.
- Reed Construction & Property: Major UK construction recruitment firm placing qualified personnel on infrastructure projects — overlapping with CSS's rail recruitment and construction labour supply offerings.
- Hays Construction & Property: Large UK-based construction and property recruitment specialist supplying trades and site labour — comparable to the manpower/rail recruitment portion of CSS's service mix.
Direct peers
- Erith Contractors: UK demolition, groundworks, and civil engineering subcontractor working with tier-1 main contractors on major projects — a close functional analogue to CSS's groundworks and labour-provision model.
- FM Conway: UK infrastructure services contractor delivering civil engineering, drainage, and groundworks across London and the South East — a comparable UK mid-market groundworks and civil engineering peer.
- McGee Group: UK specialist contractor delivering demolition, groundworks, and enabling works for major construction and infrastructure projects — overlapping directly with CSS's civil engineering and site preparation services.
- J. Murphy & Sons: UK civil engineering and infrastructure contractor with deep experience on rail and major infrastructure works including Crossrail and HS2 — directly comparable in target markets and core competencies to CSS.
- Keltbray Group: UK-based specialist civil engineering and infrastructure services contractor delivering groundworks, demolition, and rail civils — directly comparable in scope, customer base, and rail-certification workforce to Complete Site Services.
Regional players
- Bowmer & Kirkland: UK construction and infrastructure contractor active in groundworks and civil engineering on major schemes, with comparable mix of construction labour and groundworks subcontracting services.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat2 records
Key risks6 records
Key highlights6 records
Customer concentration
Complete Site Services social profiles
Digital presenceComplete Site Services financial estimates
Financial estimateRevenue estimate
Valuation estimate
Complete Site Services leadership team
Management profileNumber of profiles
Profiles1 record
Complete Site Services funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Complete Site Services M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Complete Site Services
What does Complete Site Services do?
Complete Site Services provides civil engineering and groundwork subcontracting (landscaping, drainage, concrete works, structural repairs) and supplies qualified construction personnel (from single contractors to full subcontracting packages) to main contractors, property developers, and rail infrastructure projects. The company operates as a B2B subcontractor, with PAYE-employed staff holding certifications such as CSCS, SMSTS, and PTS, and has delivered work on major UK projects including Crossrail and HS2.
Is Complete Site Services a public or private company?
Complete Site Services is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Complete Site Services founded?
Complete Site Services was founded in -1. It employs 11 to 50 people.
Where is Complete Site Services based?
Complete Site Services is headquartered in London, United Kingdom, in the Europe region.
How does Complete Site Services make money?
Two revenue lines are on record. Civil Engineering & Groundwork Subcontracting is the primary driver. The others are manpower & Staffing Provision.
Who are Complete Site Services's main competitors?
Broad incumbents on record are Balfour Beatty, Costain Group, Reed Construction & Property and Hays Construction & Property. Direct peers are Erith Contractors, FM Conway, McGee Group, J. Murphy & Sons and Keltbray Group. Bowmer & Kirkland is listed as a regional player.
Does Complete Site Services have an API?
No public API is recorded for Complete Site Services.
What industry is Complete Site Services in?
Complete Site Services's product category is Construction Subcontracting Services. Its primary akta.pro industry code is IMAFAKAD, Trenching & Utility Excavation, with a secondary code of IMAFAKAO, Site Access & Temporary Roads / Working Platforms. Its NAICS code is 23891 and its SIC code is 1600.