Smedley Hydro is a former Victorian hydropathic spa and hotel in Birkdale, Southport, Merseyside, England.

The building has been used as a college, hydropathic spa, and hotel and is currently the home of the General Register Office for England and Wales.

The hotel also boasted conservatories, a sun lounge and a ballroom that had a theatre stage and resident dance hostesses.

[3] In September 1939 the government took over management of the hotel building, turning it into a centre for the registration of the British population.

[4] In 1991 the General Register Office for births, deaths and marriages was relocated from London to the Smedley Hydro site.