‘Stop using’ flour as warning issued after Cambridgeshire mill inspection

The mill’s flour is sold at National Trust locations

A Cambridgeshire watermill has warned customers to “stop using the flour” after an inspection. Houghton Mill, an 18th-century working watermill on Mill Street, has advised anyone who has purchased their flour with a 2026 production date to stop using it while further investigation is carried out.

The mill, managed by the National Trust, is situated on the idyllic River Great Ouse. It said it had a routine inspection on the grain used to produce Houghton Mill flour and now further tests are being carried out.

Houghton Mill have confirmed that any affected flour can be returned to the place of purchase for a full refund. The mill’s flour is sold at National Trust locations such as Wicken Fen Nature Reserve, which have also advised customers to not use the flour.

A statement by the mill said: “Following the routine inspection of grain used to produced the Houghton Mill flour, as a precaution, we’re advising anyone who has purchased Houghton Mill flour with a 2026 production date from our shop to stop using the flour while we carry out further tests.

“Any flour can be returned to the place of purchase for a full refund.”

Houghton Mill has three floors of traditional machinery and milling demonstrations as well as water meadows and pretty walking routes alongside the River Great Ouse.