Army Service Numbers 1881-1918 - Snapshot of British Army service numbers and their date of issue

British Army Medals - Who was entitled to wear what

Auctioneer, Dix Noonan Webb has transcripts of the medal rolls for the following medals:
- Military General Service 1793-1814
- Naval General Service 1793-1840
- Army of India 1799-1826
- Indian Mutiny 1857-1859
Britishbattles.com - Battles fought by Britain and its imperial forces in the 18th and 19th centuries. 
Soldiers of The Queen - Victorian-era British military photographs

The National Archives - Essential resource, confusing site.

National Archives of Scotland