Comcast has joined the backers of the same-day grocery delivery service, now reportedly valued at $2bn, as it looks to expand across the US.

US-based groceries delivery service Instacart closed a $220m series C round on Tuesday featuring Comcast Ventures, the corporate venturing unit belonging to cable and telecommunications service provider Comcast.

Kleiner Perkins Caufield & Byers led the round, which also included Dragoneer Investment Group, Thrive Capital, Valiant Capital, Andreessen Horowitz, Khosla Ventures and Sequoia Capital. Comcast participated as a new investor.

Instacart provides a service that enables users to order groceries from a variety of stores through its app. The groceries are…