The long-term strategic development partner would help the council regenerate locations such as Swansea Central Phase Two, the Civic Centre site, the Sailbridge site, and a large area of the former Hafod-Morfa Copperworks site.

Swansea Central Phase Two is much of the city centre area between St Mary’s and St David’s Churches; parts of the copperworks site are already reserved for development by Penderyn Whisky and Skyline New Zealand.

Other areas include the sites of the former Oxford Street School and St Thomas Station, an area bordered by the River Tawe and the lower part of the A4217.

The council will publish an OJEU notice in the next 48 hours seeking expressions interest from potential partners.

Council leader Rob Stewart said: “We are transforming Swansea city centre and we want to continue the regeneration with a great businesses partner on board.

“Swansea Council is a substantial land owner and we want to deliver regeneration through a number of significant and strategic sites over the short, medium and long term – and to identify further opportunities from our land holdings.

“We want to explore all options of innovative property delivery models that will deliver maximum benefits to the people and economy of Swansea.”

The new development partner will provide risk capital and the council will seek public sector grant funding if needed.

Expressions of interest must be submitted by Monday, May 6 with the council happy to discuss the proposal before this date.