Articleship

Hello sir, i have read your coment in the query regarding tranfer of articleship within one year to big firms. I have completed my grp1 ipcc in first attempt. I want to join in big4 but as u said big4 wont recruit single groups. So i wanted to do first six months articleship in small firm and after i finish my grp2 , does big4 accept me because it wil be a case of transfer if not what would be other case. Please suggest me thankin you