SMAS, Acclaim, and Achilles: A Guide to the Other SSIP Schemes
Most guides to construction accreditation cover CHAS, Constructionline, and SafeContractor — then stop. Those three schemes dominate the conversation because they dominate the market. But SSIP has over 20 member schemes, and three of the alternatives are worth knowing about. Depending on your sector, geography, and client base, one of them may be a better fit than the big three — or a cheaper route to the same outcome.
This guide covers SMAS Worksafe, Acclaim Accreditation, and Achilles BuildingConfidence: what each assesses, who recognises them, what they cost, and when they make sense for a construction SME. It also briefly covers two other schemes — PQS and CQMS — that fly even further under the radar.
If you are still getting to grips with what SSIP actually is and how mutual recognition works, start with our guide: What Is SSIP and Which Scheme Should You Choose?.
Why Look Beyond the Big Three?
Three reasons.
Cost. CHAS, Constructionline, and SafeContractor are priced for mass-market uptake, but they are not the cheapest SSIP options. Some alternative schemes offer SSIP core criteria assessment from under £150.
Speed. If you need SSIP accreditation quickly — say, to meet a tender deadline — some smaller schemes have faster turnaround times because they process fewer applications.
Sector fit. Some clients and regions favour specific schemes. If you work in Scotland, SMAS has recognition that CHAS does not always match. If your clients are major infrastructure operators, Achilles may carry more weight than SafeContractor.
The underlying point: all SSIP member schemes assess against the same core criteria. SSIP mutual recognition means that a certificate from SMAS, Acclaim, or Achilles satisfies the same baseline as one from CHAS or SafeContractor. The differences lie in scope, price, speed, and where each scheme is best recognised.
For a full comparison of the big three, see CHAS vs Constructionline vs SafeContractor.
SMAS Worksafe
SMAS stands for Safety Management Advisory Services. It is one of the founding members of SSIP, operating since 1998 — predating SafeContractor. SMAS is headquartered in Motherwell, Scotland, and has particularly strong recognition in Scotland and the north of England.
What It Assesses
SMAS Worksafe is the core SSIP-level assessment. It covers the standard health and safety criteria: policy, risk assessments, method statements, training and competence, insurance, accident reporting, and subcontractor management. The assessment is desktop-based — you upload your documentation and an assessor reviews it.
SMAS also offers SMAS Worksafe Plus, which extends the assessment into environmental management, quality management, and other compliance areas — broadly comparable to CHAS Premium Plus or Constructionline Gold.
Pricing
SMAS Worksafe starts from approximately £299 + VAT for smaller contractors. Pricing is tiered by employee count and turnover. Multi-year options may reduce the annual cost. Check the current fee schedule directly with SMAS before applying.
Pass Rates and Turnaround
SMAS reports a high first-time pass rate for Worksafe applications. This likely reflects two things: SMAS provides detailed guidance to applicants before submission, and the Worksafe assessment is tightly focused on SSIP core criteria without the broader scope of schemes like CHAS Premium Plus. Direct comparisons between schemes are difficult because each defines "pass" and "referral" differently and attracts a different applicant profile.
Assessment turnaround is typically two to three weeks, though this varies by volume. SMAS offers an expedited service for an additional fee.
Where It Is Strongest
Scotland, northern England, and the social housing sector. Scottish local authorities, housing associations, and public-sector bodies frequently recognise SMAS directly. If your work is concentrated north of the border, SMAS may be a more natural fit than CHAS — and your clients may be more familiar with it.
When It Makes Sense
SMAS Worksafe is a strong option if you need SSIP accreditation at a lower price point than CHAS Standard, your work is in Scotland or northern England, or you want a focused desktop assessment on health and safety core criteria.
Acclaim Accreditation
Acclaim is operated by BRE (Building Research Establishment) — the same organisation behind BREEAM, BRE Global, and a range of construction standards and certifications. That heritage gives Acclaim a particular standing in property and construction circles.
What It Assesses
Acclaim assesses against the SSIP core criteria for health and safety. The standard assessment covers the same ground as CHAS Standard or SMAS Worksafe: health and safety policy, risk assessments, method statements, training, insurance, and incident management.
Acclaim also offers optional assessment modules covering environmental management, quality management, and corporate social responsibility. These are bolt-on assessments that you can add to the core SSIP certificate.
Pricing
Acclaim pricing is not always prominently published. Historically, fees have been comparable to CHAS Standard — typically in the range of £300–£500 + VAT for smaller contractors. Additional modules carry supplementary fees. Contact Acclaim directly for a current quote.
Assessment Process
Acclaim assessments are carried out by BRE-qualified assessors. The core assessment is desktop-based. The optional modules may require additional documentation or evidence depending on their scope.
Where It Is Strongest
Property, construction, and built environment sectors — particularly where BRE's brand carries weight. Clients familiar with BREEAM, Certified Environmental Profiles, and other BRE standards tend to recognise Acclaim readily. Acclaim also has good recognition among housebuilders and residential developers.
When It Makes Sense
Acclaim is worth considering if you work in sectors where BRE's reputation adds credibility, you want optional modules without committing to the full scope of CHAS Premium Plus or Constructionline Gold, or your clients specifically name Acclaim in their prequalification requirements.
Achilles BuildingConfidence
Achilles operates supply chain management platforms across multiple sectors globally. BuildingConfidence is its construction-specific assessment programme for the UK and Ireland. It positions itself at the higher end of construction prequalification — targeting contractors who work for major infrastructure clients, utilities, and Tier 1 principal contractors.
What It Assesses
BuildingConfidence is a comprehensive assessment. It is a recognised CAS (Common Assessment Standard) assessment body, meaning it satisfies the full CAS criteria — not just the SSIP core health and safety module but also the extended modules covering environmental management, quality management, financial standing, equality and diversity, modern slavery, and anti-bribery.
Assessment includes a combination of desktop review and, for higher categories, audit elements. Achilles uses a risk-based approach, with the depth of assessment scaled to the risk profile of the contractor's activities.
Pricing
Achilles does not publish standard pricing. Fees are quote-based and depend on the scope of assessment, company size, and the categories of work covered. Expect costs to be higher than CHAS or SMAS — BuildingConfidence is not a budget option. Request a quote directly from Achilles.
Where It Is Strongest
Major infrastructure, utilities, rail, water, and energy. If your clients include utility companies, Network Rail supply chains, or major infrastructure operators, BuildingConfidence may be the specified requirement. Achilles also has recognition among some Tier 1 contractors who use it alongside or instead of Constructionline.
When It Makes Sense
Achilles BuildingConfidence is relevant if your clients are in infrastructure, utilities, or energy and specifically require it, you need full CAS-level assessment (not just core health and safety), or you are working at a scale and risk level where a comprehensive, audited assessment adds commercial value.
For most SMEs doing general construction, maintenance, or fit-out work, Achilles is likely more assessment than you need — and more expensive than the alternatives. But if your growth strategy targets infrastructure clients, it is worth investigating early.
Two More to Know About
PQS (Prequalification Services)
PQS is one of the most affordable SSIP member schemes. Pricing starts from approximately £99 + VAT for smaller contractors. The assessment covers SSIP core criteria — health and safety only, with no extended modules. PQS is desktop-based with a relatively fast turnaround.
PQS is a pragmatic choice if you need SSIP accreditation at the lowest possible cost and your clients do not specify a particular scheme. The trade-off is limited brand recognition — most clients will not have heard of PQS by name, though the SSIP certificate it produces is valid for mutual recognition purposes.
CQMS (Construction Qualification Management Services)
CQMS offers SSIP assessment with a focus on the construction sector. Pricing typically sits between PQS and CHAS. The assessment covers SSIP core criteria with optional extended modules. CQMS has reasonable recognition among some principal contractors, though it lacks the market penetration of the larger schemes.
Choosing Between Schemes: A Decision Framework
With all these options, how do you decide?
Step 1: Check what your clients actually require. Review tender documents and supply chain portals for your current and target clients. If a specific scheme is named, that settles the question. If the requirement says "SSIP accreditation" without naming a scheme, you have flexibility.
Step 2: Consider geography and sector. Scotland and northern England lean towards SMAS. Infrastructure and utilities lean towards Achilles. Property and housebuilding may favour Acclaim. General construction and public sector work remain dominated by CHAS and Constructionline.
Step 3: Consider scope. If you only need core health and safety assessment, the smaller schemes (PQS, SMAS Worksafe, CQMS) offer that at a lower price. If you need environmental, quality, and financial assessments bundled in, SMAS Worksafe Plus, Acclaim with modules, or Achilles BuildingConfidence may be appropriate.
Step 4: Consider budget. Annual costs across SSIP schemes range from roughly £99 to well over £1,000 depending on the scheme, tier, and your company size. Our guide to construction accreditation costs breaks down the full picture.
Use the Construction Accreditation Readiness Scorer to benchmark your documentation before applying to any scheme.
SSIP Mutual Recognition: The Practical Limits
All of these schemes are SSIP members. All assess against the same core health and safety criteria. Mutual recognition means that, in theory, a certificate from any one is equivalent to a certificate from any other — at the core level.
In practice, there are limits. Mutual recognition covers the SSIP core criteria only. Extended modules (environmental, quality, financial) are scheme-specific. Some clients specify a named scheme and will not accept alternatives, regardless of SSIP status. And some register-based schemes like Constructionline require registration to appear in buyer searches — holding SMAS or Acclaim does not add you to the Constructionline database.
For a detailed explanation of how mutual recognition works and where it breaks down, see our SSIP guide.
Summary
CHAS, Constructionline, and SafeContractor are the defaults — but they are not the only options. SMAS Worksafe offers a cost-effective, focused route to SSIP accreditation with particular strength in Scotland. Acclaim brings BRE credibility and flexible optional modules. Achilles BuildingConfidence serves the infrastructure and utilities end of the market with comprehensive CAS-level assessment. And for pure budget plays, PQS gets you an SSIP certificate from under £100.
The right choice depends on your clients, your geography, your sector, and your budget. Start with what your clients require. If they require "SSIP" generically, you have more options than you think.
For the broader context on how prequalification works across UK construction, see our Complete Guide to Construction Supplier Prequalification.
Disclaimer: This guide is based on publicly available information and common industry practice. TenderReady is not affiliated with, endorsed by, or acting on behalf of SMAS, BRE, Acclaim, Achilles, PQS, CQMS, SSIP, or any other named accreditation body or scheme. Pricing, assessment criteria, and processes are subject to change — always verify current details with the relevant scheme directly.