Hi
These are from a private data base of Nottingham/Notts Police Officers, all with the surname ASHER
1881 Census George,PC 28 Yrs bSudbrook, Lincs,HA Bassingfield West Bridgford (County area)
1881 Census. Thomas, PC 23 Yrs,b Great Gonerby, Lincs,HA 22 London Road, Nottm, (I think lionked to a City Police Statiion)
1898 Directory, Thomas ,Sgt, 3 Lees Hill Street.
1898 Directory, Thomas, Sgt, 16 London Road Police Station
1905 Directory. Thomas, B Div, Det/Sgt ,Meadows Police Station
1914 Directory Thomas, Sgt, 152 Queens Walk, Nottingham.
1925 Directory, JW, Sgt Mansfield. (County Police )
It looks like Thomas may be your man but theremay be more than one with the same rank ? I do not have any further info but I will check elsewhere and if anything turns up I will get back.
Robin