SEARCH GEM
The Marriage Locator site at www.marriagelocator.co.uk has existed since 2010, is owned by the Guild of One-Name Studies https://one-name.org and is freely available. It is a rather clever site and uses the information based upon the General Register Office (GRO) marriages index, which can be accessed via a number of sites, including FreeBMD. It is ideal for those who are new to genealogical research or reside outside of the UK and therefore perhaps not used to the GRO indexes.