School driving service having little time for composer (8)
I believe the answer is:
schubert
'composer' is the definition.
(Franz Schubert, 1797-1828)
'school driving service having little time' is the wordplay.
'school' becomes 'sch' (common abbreviation).
'driving service' becomes 'uber' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'having' means one lot of letters go next to another.
'little time' becomes 't' (abbreviation for time).
'sch'+'uber'+'t'='SCHUBERT'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for schubert that I've seen before include "Butchers embrace great German composer" , "Franz --, his Unfinished symphony is famous" , "Austrian composer and prolific songwriter" , "Franz --, Viennese composer" , "Austrian composer of the Trout piano quintet" .)