For reference, this page notes the monarchs for the whole 19th Century and thereafter.
George III in Brighton,
by Chantrey.
George IV by Chantrey, in
Trafalgar Square.
George IV in Greenwich by Nixon.
We have of course a multitude of Queen Victoria statues to choose from; the one below left is one of the most glorious, by Alfred Gilbert. The second one is a fairly typical one, in this case by Thomas Brock.
Queen Victoria, in Winchester
and in Birmingham
We have not so many Edward VIIs as Victorias, but still a good choice, often on the frontages of buildings, as in the rather less than serious one below right.
Edward VII in Bristol,
by Poole.
And in High Holborn, by Richard Garbe.
George VI in London, by William McMillan.
And of course, how can we have a Victorian-centred page without Albert, the Prince Consort. There are several excellent ones to choose from; this is from the memorial in Manchester.
Prince Albert, by Mathew Noble.