May 6 (Reuters) - Office space provider IWG said

on Tuesday its core activities were not directly impacted by

trade tariffs imposed by President Donald Trump, and that its

business indicators in the U.S. were at an all-time high.

"March was a record sales month, and lead indicators such as

enquiries and tours are running at all-time highs in the U.S.

despite the challenging macroeconomic backdrop," CEO Mark Dixon

said.

IWG said it had not seen any impact on signings or openings

to date, as it posted a 2% rise in first-quarter system-wide

revenue and affirmed its annual forecast.

The company expanded its share buyback programme to $100

million from $50 million earlier.