REGINA VRS  OTOO, YA WSON AND AGGREY   ) Although it may assist, in offences concerning public officers, ,to distinguish extortion from corruption by equating the former with a demand, express or implied, moving from the officer, and by equating the latter with the reception of an offer, express or implied, moving towards the officer, yet the offence of corruption in respect of the duties of his office will have been committed by a public officer who directly or indirectly agrees to permit his conduct as such officer to be influenced by a gift, promise or prospect of valuable consideration whether or not the initiative in the matter has moved from him or towards him.