Complex sentence: Adkins began his managerial career in 1993 as the player-manager of Bangor City in the League of Wales where he won the championship in the 1993--94 and 1994--95 seasons; before departing in 1996.
Split into simpler sentences: Adkins began his managerial career in 1993 as the player-manager of Bangor City in the League of Wales. Successful followed as he won the championship in the 1993-94 and 1994-95 seasons before departing in 1996.