A timeline by G.Bone. It can be read here.
“Stilicho the Younger” migrates to Britain and creates a native regime there that runs on military lines coupled with the usual POD's as listed in The Coronation of the Hun. A similar course of history then develops with Attila's line of heirs soon petering out due to internal struggle/the Slavic Invasion. This is also merged with OTL's Rise of Islam to the point that Constantinople is captured early, all of Spain is invaded, and Rome is sacked twice by a Tuareg State that collapses soon after. Not surprisingly, much of the expansion outside of Europe is done by the Caliphate and Britain, due to a lack of other stable powers.