<Li> The Doctor uses a football rattle to calm the kids down . He previously used a football rattle in the Fourth Doctor serial The Masque of Mandragora as a distraction technique . </Li> <Li> In the concluding scenes, Sarah Jane and the Doctor each tell the other not to forget them: this same exchange took place in The Hand of Fear, as Sarah Jane left the TARDIS for the final time until The Five Doctors . </Li> <Li> Sarah Jane and the Doctor meet next in Death of the Doctor, although before that they'll silently wave goodbyes to each other in The End of Time . </Li> <Li> K - 9 Mark IV explains how he is able to navigate the three - story Smith house when he announces "activating stair - negotiating hover mode ." K - 9 Mark III lacked hover ability, and Sarah Jane was shown lifting him into and out of her car's hatchback in "A Girl's Best Friend". K - 9 Mark IV is later shown in "The Gift" to use his hover mode to exit Sarah Jane's car . </Li>

Sarah jane adventures the wedding of sarah jane smith part 2