For some ideas of other places you could try, for example the "Absent Voters List" have a look at:
http://www.
manchester.gov.uk/info/448/archives_and_local_studies/462/family_history_in_manchester/10

Quote: "We hold some absent voters lists for the City of Manchester for 1918-1923 on microfilm. They give information such as the regiment, regimental number, rank, battalion"

There are also links for:
The National Roll of Honour: Manchester
and
The National Roll of Honour: Salford