This medal commemorates the Representation of the People Act 1884 (also known informally as the Third Reform Act) which extended the 1867 concessions from the boroughs to the countryside. All men paying an annual rental of £10 or all those holding land valued at £10 now had the vote.
On the side pictured:
Rim: The Constitution in all its fullness for the people of the United Kingdom 1884
Below the Lion: Gladstone and the Franchise for the Two Million
On the other side:
Rim: Our Queen, Our Country and Our Rights
Banner: Justice for All
Banner: Peace Law Order
This medal was clearly very important to my great-grandfather (b.1867) and was passed on through the family. Cleethorpes was not made a borough until 1936 so it was probably this act which extended the franchise to include his father and, as soon as he was 21, himself. In the early twentieth century he was a member of the Rural District Council and a Magistrate, and had been asked by the local Liberal party to stand for parliament - though he refused this for family reasons.