Plumbers in Markham

These 2 plumbers in Markham are compiled from the Companies House register, published under the Open Government Licence. It covers active limited companies and LLPs.

What it misses: the address on the register is a registered office, often an accountant's rather than a workplace, and sole traders do not appear on the company register at all, so trades with many one-person businesses are thinner here than on the ground. Nothing on this page is paid for, and no business can pay to rank above another. How the whole directory is compiled.

Register data loaded 2026. Ratings are shown with the inspection date they were issued on.