This Lancet study was picked up by the press last Thursday - it looks at the development of children born to mothers who were administered antibiotics in premature labour. The antibiotics were being given to delay premature birth, and the Department of Health is advising that they only be given in the event of infection.
The Society for General Microbiology news page has a summary and links to the story in four national newspapers. The Lancet article is here, with links to several related things.
(Note: the SGM news page link may cease to work when there is later news - you need to navigate to the news for the 18 September. The Lancet link uses the DOI and whether it will work for University users off campus I am not exactly sure. If you find out, please let me know by leaving a comment).