OUR STORY
Founded in 1968 by John Whistler Snr, Whistlers is a trusted, family-run specialist contractor in Central London. For over five decades, we have delivered complex, high-profile projects across the capital, building a reputation for quality, reliability, and craftsmanship.
We excel in complex, high-profile projects where strategic planning, precision, and adaptability are essential. Our expertise is particularly strong in Central London, where logistical and environmental challenges demand innovative solutions. Beyond traditional contracting, we are skilled in value engineering to improve efficiency and equally adept at delivering bespoke finishes and luxury designs in close collaboration with clients and their teams.
Our Marylebone office keeps senior management close to projects, allowing for regular site visits, hands-on oversight, and immediate support. It also provides flexible spaces for both formal and informal client meetings.
TRUSTED SUPPLY CHAIN PARTNERS
We maintain long-standing relationships with a fully integrated supply chain. Many subcontractors and suppliers have worked with us for years, ensuring consistency and quality across every project delivered. New partners are rigorously assessed to meet our standards for capability, safety, and professionalism.
Our network includes highly specialised suppliers, artisans, and contractors. Consequently, we can deliver exceptional results across diverse disciplines, from heritage restoration to contemporary architectural finishes.
OUR PEOPLE
Our team combines practical skill, experience, and local knowledge to deliver every project efficiently and to the highest standards. We invest in our people through apprenticeships and internal development, giving staff the opportunity to grow into leadership and specialist roles. This hands-on expertise and continuity ensure that every project benefits from informed decision-making and a collaborative approach.
HEALTH, SAFETY & COMPLIANCE
Safety is a core priority at Whistlers. Independent audits regularly place us among the highest performing contractors, and all staff receive tailored, role-specific training. Senior leadership provides expert oversight, ensuring prompt and effective responses to any incident.
We maintain full compliance with all relevant health and safety legislation, building regulations, and industry standards. Regular site audits, risk assessments, and permit-to-work systems help us proactively manage risks and maintain high standards across all projects.
Whistlers holds Safe Contractor certification, and many sites participate in the Considerate Constructors Scheme, consistently exceeding expectations.
SUSTAINABILITY & ENVIRONMENT
Sustainability is central to our approach. We minimise waste, reduce carbon emissions, and implement responsible practices on every project. Our fleet is over 50% electric, with plans to transition fully as suitable vehicles become available. We prioritise sustainable sourcing, partner with environmentally aligned suppliers, and train our team to champion continuous environmental improvement.
We monitor energy, water, and waste management using advanced data systems. Aligned with the UK government’s Net Zero 2050 target, we commit to responsible site management, community engagement, and sustainable construction practices that deliver both quality and environmental stewardship.
CUSTOMER CARE & AFTERCARE
Our dedicated Customer Service Team ensures seamless support during project handover and throughout the aftercare period. We respond promptly to post-completion issues and maintain direct, transparent communication to guarantee client satisfaction and build long-term relationships.