Private Tomlinson must have been a member of the 1st Volunteer Battalion based in Wakefield. Volunteers to South Africa were given a new number from the Regulars' series. Some regiments list them all together and it seems that they were given out alphabetically. The KOYLI list volunteers and Regulars together, so it is less obvious.
He was also entitled to the two date clasps - 1901 South Africa and 1902 South Africa - for his Queens South Africa medal. He was not entitled to the Kings medal, so he was there less than 18 months. The two date clasps were returned to the Medal Office in 1912 as unclaimed.
Records of men who died while serving before WW1 were destroyed 20 years later. Also, no VB records have been kept. Although you should always contact the local Records Office, in case they have something.
Ken