Games Workshop has posted record annual sales and profits, buoyed by strong demand for its Warhammer games and a growing international footprint. But the company warned it could take a £12 million hit from looming US tariffs.

Shares in the Nottingham-based firm rose by 5% on Tuesday morning after it reported a 14% jump in annual revenues to £565 million for the year to June. Pre-tax profits rose nearly a third to £262.8 million.

Sales in North America surged 14.6% to £51.7 million, supported by new store openings and growing popularity of its tabletop games. The company added 30 new outlets over the year while closing eight, ending with a global portfolio of 570 stores.

Despite the strong performance, Games Workshop flagged concerns over planned US tariffs that could affect its operations from 2025.

“If we did nothing, new tariffs could impact profit before tax by around £12 million in 2025/26,” the company said in a statement. It added that it would respond “in our normal pragmatic way” and aimed to offset the impact through operational efficiencies.

Gross margins are expected to fall by about 2% as a result of the tariffs, although the firm remains confident in its ability to adapt.

Chief executive Kevin Rountree said the company would continue to prioritise product quality, manufacturing innovation and the loyalty of its fanbase. “We remain focused on delivering our plans and working tirelessly to overcome any significant obstacles,” he said.

Games Workshop joined the FTSE 100 last year after sustained growth lifted its market value.