St Enoch, one of the biggest and busiest of the 15 stations, will be the first on the network to benefit from a lift.

It also has a brand new station office combined with a travel centre now in operation.

Members of Strathclyde Partnership for Transport agreed the £360,000 cost of design work at Bridge Street, Cessnock, Kelvinbridge and Shields Road stations.

Hillhead station was the first to be refurbished with new escalators, improved facilities for disabled passengers, new ceiling and wall tiles, updated signs and a mural by Scots artist Alasdair Gray.

Work at Partick, Kelvinhall and Ibrox stations was finished in time for the Commonwealth Games, and construction is presently underway at St Enoch. The internal look of the busy city centre station has been completed and the contractor has started the complex task of installing a lift and building the dramatic new glass frontage.

Design work at Govan and Buchanan Street stations is nearing completion and SPT members will be asked to approve the start of design work at the next four.

The stations next in line for work to start are St George’s Cross, Cowcaddens, West Street and Kinning Park.

Next year the transport body is expected to decide who will provide the state-of-the-art driverless trains which will speed up journeys and carry more passengers.

It is believed the cost of the contract will be around £200m, with the upgrade not expected to be finished until 2020.

SPT chief executive Gordon Maclennan said St Enoch was benefitting from investment of £5.3m to modernise the Subway station and replace outdated equipment.

He added: “The major makeover to our flagship city centre station marks a key stage in the delivery of our Subway modernisation programme across the network.

“We’re doing everything possible to minimise disruption and to provide customers with the information they need to make their Subway journey in different ways when the work is carried out.”