Amanda Levete has submitted proposals for an open-air courtyard and a 1,500sq m underground gallery at the Victoria & Albert museum in Kensington.

Levete’s practice ALA won a design competition for an extension to the museum in March last year, beating proposals from architects including Heneghan Peng, Snohetta and Jamie Fobert.

In a statement describing its proposals, the practice said: “The beautifully crafted flow of spaces will offer the V&A’s expected three million visitors each year an improved experience through better services.

“The proposed gallery supplies the V&A with a long-awaited facility that is worthy of the exhibitions it deserves to attract and the collections that it already holds.”

The project will also create a new entrance to the museum from Exhibition Road, an exhibition shop and a cafe.

Announcing AL_A’s appointment last year, the V&A said the proposals ”demonstrated clear analysis and a good understanding of the V&A’s aims”.