I thought ending it with the Aunt Lucy hug was just about perfect. Roll the credits, dust in my eye, job done, fetch the mince pies!
But then they shoved the Hugh Grant prison scene in. It was nice, but ruined the neatness of the ending for me. So 9.99/10 from me
HOWEVER .... I later watched a bit of the Grant docco, and the director [of Padd2] mentioned that scene as being the very first thing filmed for the movie - so I suspect it was ALWAYS going to be in the film somewhere, cos a lot of time+money had gone into it!