The UK Health Security Agency (UKHSA) warns of an increase in reported Zika virus cases in the UK. The agency says the number of cases is rising rapidly and highlights that Zika is an illness commonly transmitted to people through bites from infected mosquitoes. The warning is also linked to travel, with the reports noting that Britons returning from popular beach destinations may be bringing the infection back. Zika can cause serious outcomes, including neurological complications, and the UKHSA’s message focuses on awareness of symptoms and the importance of seeking medical advice if illness develops after travel. The sources agree that the current concern is driven by a growth in cases and that transmission typically occurs via mosquito vectors rather than person-to-person spread in everyday settings. The UKHSA therefore frames the update as a public health alert directed at travellers and clinicians, urging attention to recent travel history when assessing patients who develop compatible illness.