CREATE TABLE table_30974 ("Episode" CLOB, "First broadcast" CLOB, "Andrew and Jacks guest" CLOB, "Jamies guests" CLOB, "Scores" CLOB)

When was the episode with Amy Williams as Andrew and Jack's guest broadcast?
SELECT "First broadcast" FROM table_30974 WHERE "Andrew and Jacks guest" = 'Amy Williams'
SELECT "First broadcast" FROM "table_30974" WHERE "Andrew and Jacks guest" = 'Amy Williams'