Whats this song off sextuplets off tv tonight?

It was on tv tonight on Sextuplets the little lambs straight after the
first advert break: Hers is a link its at 8.29 ish, straight after the
first break. I know it, I just cant put my finger on it. Thank you :)

http://www.itv.com/itvplayer/video/?Filter=252785module=whatsontitle=-the-little-lambsreferrer=homeday=todaychannel=itv1