Uniqlo will reopen its global flagship store on London’s Oxford Street next month after a major refurbishment project was delayed.

The store, at 311 Oxford Street, closed last March and was originally due to reopen last year.

The refurbished shop will open its doors again on March 18.

The Fast Retailing-owned fashion specialist, which has around 1,700 stores globally, has continued to operate its two stores nearby at 170 Oxford Street and Regent Street.

In its third-quarter last year, bosses blamed a decline in profits on the closure of the London flagship.

The new shop features nearly twice the amount of original floor space, more than 24,000 sq ft, after two floors were added, bringing the total to five.

The store includes a roof terrace with views across London.

It also features a new “cultural hub” area called Uniqlo WearHouse London, which will host events to “celebrate London”, the retailer said.

Takao Kuwahara, Uniqlo Europe’s chief executive, said the store “demonstrates Uniqlo’s long-standing commitment to London”.

Last month Uniqlo cut its full-year earnings forecast after reporting first-quarter operating profits fell 17% to ¥75.9bn (£440m).