CREATE TABLE table_30959 ("Episode" TEXT, "First broadcast" TEXT, "Andrew and Georgies guest" TEXT, "Jamie and Johns guest Dermot OLeary replaced Jamie Redknapp as team captain for one week in series 3 ,  episode 8." TEXT, "Scores" TEXT)

Who was Andrew and Georgie's guest when Jamie and John's guest was Amy Williams?
SELECT "Andrew and Georgies guest" FROM table_30959 WHERE "Jamie and Johns guest Dermot OLeary replaced Jamie Redknapp as team captain for one week in series 3, episode 8." = 'Amy Williams'
SELECT "Andrew and Georgies guest" FROM "table_30959" WHERE "Jamie and Johns guest Dermot OLeary replaced Jamie Redknapp as team captain for one week in series 3, episode 8." = 'Amy Williams'