The news follows the announcement last December that the company had entered into binding agreements to purchase the businesses.
The agreement will see nearly 300 people from Bassetts, DHS, and Neville Lumb joining the Wolseley UK business.
The process is expected to be a seamless transition, with all outlets operating as normal and no change for customers.
Simon Oakland, CEO at Wolseley, said: “The completion of the acquisition of Bassetts, DHS, and Neville Lumb marks a very exciting chapter for the business, our customers, and our colleagues, both existing and new.”
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