simply - no. Academics not good enough (1st class needed) and by the sounds of it exp not good enough ('local accounting firm'). You're an accountant trying to get into corporate strategy? Sorry, but no. MBB is not the top 10% or 5%, it's the top 1%. Best (and by that I mean very remote) chance would be to get into another firm (e.g ATK), get a top MBA (LBS, INSEAD, not Oxford, Warwick etc) then you may have a chance. Good luck.