An "iconic" Glasgow building could be redeveloped for future use.

A planning application has been submitted to upgrade the building at 301 St Vincent Street, at the cusp of the city centre.

Currently owned and occupied by Santander, the seven-storey building is used as offices across 308,000 sq ft of net floor area and over 40,000 sq ft of terraces and courtyards.

The work would "redefine an existing landmark building and breathe new life into a key location" and establish a best-in-class office space for tenants.

Included in the plans are 50,000 sq ft of meeting, event, co-working, health, fitness and dining facilities.

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The huge site is an example of late modernist architecture, with a mirrored glass facade.

Papers reveal that this look will be retained but the height of the windows will be increased, allowing more natural daylight inside.

Also planned is "a striking new building entrance that is befitting of the presence, scale and long term aspirations for 301 St Vincent Street".

Planning officials from Glasgow City Council are considering the application and a decision is expected by Friday, May 17.

The last day for comments is Thursday, April 25.