The ruler of Alba at the beginning of 954 was King Malcolm I (Malcolm the Dangerous Red), who had ruled since 943. This year, King Indulf (The Aggressor) would take over.
The ruler of Deheubarth was King Owain ap Hywel ap Cadell, who had ruled since 950 and would continue to do so until 986.
The ruler of England was King Eadræd, who had ruled since 946 and would continue to do so until 955.
King Iago ab Idwal together with his brother King Idwal ab Idwal (Idwal the Junior) until Iago imprisoned him to rule alone.
This year was the last year of the rule of King Eric Haraldsson (Eric Bloodaxe).
The ruler of Strathclyde at this time was likely to have been King Dyfnwal map Owain.