About Us
Built on Integrity
AJAC Construction is part of the GASJACK Group has been established under the leadership of Managing Director Jack Bellingham.
Our commitment extends beyond offering exceptional services; we aim to ensure that every AJAC Construction customer experiences complete satisfaction throughout their journey with us.
At AJAC Construction, we are equipped to fulfil all the needs of our valued customers.
Jack Bellingham
Managing Director - Operations and Quality Lead
Gasjack Limited was founded by Jack in 2013 and offered quality Heating and Plumbing services throughout Devon and Cornwall, as the company grew it was rebranded Gasjack Group in 2024.
Jack began his career as a heating engineer, bringing with him a strong attention to detail and a commitment to high-quality workmanship. His ambition to deliver beyond his core trade has driven the company’s development into a contractor capable of delivering projects across all aspects of construction.
He has a particular niche for high specification residential, commercial and retail projects but alike has successfully delivered contracts in healthcare, education and industrial sectors.
He has a strong belief in fairness and integrity and enjoys delivering in a collaborative manner with our customers, both commercial and domestic, many who go on to become friends.
Mark Lennox
Commercial and Construction Lead
Joining Gasjack Group in 2025 Mark brings with him extensive principal contracting knowledge and experience holding senior roles in construction management both commercially and operationally for 35 consecutive years.
He brings expertise in design, tendering, account management and operational delivery having working in all industry sectors construction and civil engineering for an array of organisations from local SMEs to Tier 1 contractors with contact values from £1k to £130 Million.
His role is to spearhead our construction contracts delivery success. Mark believes strongly in right first-time delivery, lifetime customer relationships and transparent commercial transactions.
He is a trained mental health first aider and believes in fostering new opportunities for people in the construction industry.
Further CVs can be provided on request for both Jack and Mark, along with all of our management team.
Construction Services across the South West
Looking for a reliable construction company in Plymouth? Get in touch with the friendly AJAC Construction team today for unbiased advice and a free, no-obligation quote. We’re here to deliver above and beyond, handling all of your construction needs for projects big and small with a dedication to your complete satisfaction.
