Infrastructure firm FM Conway has taken a minority stake in the UK’s largest independent road surfacing company.

The Sevenoaks-based asphalt manufacturer has acquired a shareholding in Essex-based Toppesfield, which works on private industrial and major infrastructure projects.

It follows a big growth push in the road surfacing sector for the company.

In January, it bought Berkshire Macadam, which operates two asphalt plants at Reading and Aldershot.

A fortnight later it acquired United Asphalt, which operates two plants in Theale and Croydon.

The company already had plants in Erith and Heathrow.

Chief executive Michael Conway said the partnership with Toppesfield would help deliver better outcomes for both businesses’ customers.

He said: “Toppesfield’s national reach and capacity complements our strong client base in surfacing, term maintenance, civil engineering and consultancy across London and the south of England, as well as our ongoing investment in our materials business.”

Toppesfield and its existing shareholders were advised on the deal by Maidstone-based Outset Group.

Outset partner Sean Gorman said: “The partnership created will strongly underpin both parties’ growth plans, in particular in the UK infrastructure sector.”