More than £500 million worth of supermarket construction projects have started on site so far this year (to June), with supermarket projects accounting for 69%t of this figure according to Glenigan.

"Retail looks likely to deliver badly-needed growth prospects in construction during the next 18 months," according to James Abraham, economist, Glenigan.

"There has been strong growth in the underlying value of planning approvals this year coupled with favourable trading conditions (retail sales were up 3.4% last month on a strong June 2009 - British Retail Consortium)".

Sainsbury's increased profits to £610million last year, from £220million five years ago, according to a company spokesperson.

Much of this increase is being invested in expanding their network of stores.

"Supermarket projects will ensure that, as government funding fades away and other sectors remain bogged down by lack of investment, retail construction will remain well up on 2009 levels," added Abraham.

The decision by Land Securities to restart the 750,000ft2, £350 million retail development, Trinity Leeds, was a significant boost.

Francis Salway, chief executive, Land Securities, said the project is being restarted at a time where his company could reap the reward of lower costs.