✅ Fully Accredited & Trusted
Our courses are recognised by leading bodies like CITB, CSCS, and ECS, so you can be sure you’re meeting industry standards.
✅ Fast Certification
Most learners receive their certificate in 24 hours or less.
✅ Support That Cares
UK-based support team + 98% pass rate = stress-free training.
✅ 100% Online, Zero Travel
Learn anytime, anywhere — even from your phone.
✅ Smart, Streamlined Process
Courses, exams, and card applications — all handled in one place.
✅ Trusted by 45,000+ Learners
We’re proud to be one of the UK’s most trusted names in online construction training.
Because your time matters.
Because compliance shouldn’t be complicated.
Because online training should feel as good as in-person — only smarter.
Whether you’re building your career or building a team, COSAC is your partner in online, accredited training that works.
TheYetiHandler2025-01-29Trustindex verifies that the original source of the review is Google. Brilliant course thorough and detailed and easy to navigate 100 percent pass 👍 Ryan Doolan2025-01-27Trustindex verifies that the original source of the review is Google. Corse was easy to access and very straight forward, set out in Modular’s and questions on each one with a mock test at the end which you can do as many times as you like which is very helpful, also got a discount code which saved me some money which was decent, got my results back within a hour or 2 and the certificate as well. repede valeriu2025-01-22Trustindex verifies that the original source of the review is Google. The course is very good and simple explained. Victoria Abrahams2025-01-21Trustindex verifies that the original source of the review is Google. The Safe2Site course was very easy to navigate and taught me the relevant health and safety information for working on site. The exam process was good and I received a good outcome on the exam. Would recommend! Benjamin Mooney2025-01-17Trustindex verifies that the original source of the review is Google. Really easy to follow online and test was easy to access Lorraine Cunningham2025-01-17Trustindex verifies that the original source of the review is Google. The course was set out in an easy to understand way, with clear instructions. Having a few practice questions at the end of each section was a help to know that I'd understood what that section was about. As someone of a certain age that had never tried any on-line learning before, it was reassuring to find out how straightforward this course is. Having a 'mock' test before the real one was also a great help. I liked having my score told to me straight away as well and then it was confirmed and my certificate ready to print off within a few hours. I would highly recommend this course, especially for anyone who may be nervous of on-line learning. George Garofalo2025-01-14Trustindex verifies that the original source of the review is Google. Easy to use course well structured would recommended Rabee Zainalabdeen2025-01-13Trustindex verifies that the original source of the review is Google. The training materials was very helpful to understand the topic. Also, been very easy to access and finish the assessment.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Yes. Our courses — Safe2Site — are fully approved and recognised by key industry bodies such as:
This means you can trust our training to meet the required standards for certification and compliance.
COSAC courses are designed for:
From solo tradespeople to national contractors, we support learners at every level.
It covers both:
It's 100% online, mobile-friendly, and built for busy professionals who need to train around real life and real work.
We’ve helped over 45,000 learners get certified and site-ready — with:
Our results speak for themselves.
We’re not just another online course site. COSAC offers:
✔ Fast and flexible training – on any device, anytime
✔ Real-world focus – built for tradespeople, not textbooks
✔ Industry approvals – full recognition by CSCS, CITB & ECS
✔ Outstanding support – with a friendly UK-based team ready to help
We're proud to offer a smoother, smarter training experience — trusted by learners and businesses alike.
Yes. We work closely with construction companies, contractors, and training managers to:
Whether you’ve got 5 workers or 500, we’ll tailor a solution that fits.
Simple — just visit our course page, choose the training that’s right for you, and enrol online in minutes. You can start learning immediately.
Need help deciding? Contact our support team — we’re happy to guide you through it.