The Universal Music Company was the name used for the Aeolian
Company's roll-making operation in both the US and UK, both being
wholly-owned subsidiaries.  The MMD media 'AeoUni' page gives lots
of examples although the text could do with more work in places;
visit http://www.mmdigest.com/Gallery/MMMedia/AeoUni/index.html 
For facts and figures, therefore, look to Aeolian itself.

As has been said many times in MMD, Aeolian were masters at
brand-engineering, so that the same basic product could be sold in
numerous forms by different dealership networks.  Rolls apparently
manufactured by 'Aeolian' or 'Universal' are the same with only
finish and labelling differing -- their catalogues are identical
except for the serial numbers, title page and binding!

The Meloto brand was roughly the UK equivalent of Melodee, being
a brand specifically created to issue popular music, which had
previously been issued in the main Themodist series mixed in with
classical and other material.  Meloto was launched in January 1925
with a mixture of locally-arranged titles and material drawn from
the American Duo-Art/Melodee catalogue: the earlier rolls claim to
be made by the Meloto Co., changing to the Universal Co. after
a couple of years.  Unusually, there was no equivalent 'Aeolian'
product, only the 'Universal' one.

Around the times of the switch to Universal the range of Meloto rolls
was extended to include word rolls, and had shifted over to it the
various ballads that had been issued under the Aeolian song-roll brand.
Meloto classical rolls appeared circa 1931, being popular classics
drawn from the Metrostyle-Themodist range of arranged music and the
Duo-Art range of hand-played performances.

Aeolian closed its UK operation in 1931, but Universal Music continued
to trade under local ownership until 1939 (the last catalogue being in
March that year).  After the war it was purchased by Gordon Iles and
soon became Artona, which is another story.

Julian Dyer