Long-term net migration to the UK nearly halved in 2025, falling to levels last seen before Britain introduced its post-Brexit immigration system, according to new data released by the Office for National Statistics (ONS).
The ONS said net migration dropped to 171,000 in the 12 months ending December 2025, compared with 331,000 a year earlier. The decline extends a sharp fall from the record peak of 944,000 recorded in 2023.
