Big Wednesday
"Big Wednesday" being shown so late introduces a continuity error, in that it is during the episode that Mandy accidentally uses Matthew's surfboard as an ironing board, leaving it with the prominent burn visible "earlier" in "Matthew, A Suitable Case for Treatment". However, the damage is not visible when the surfboard is seen in "The Great Escape" and "Bad Timing", suggesting that those episodes should actually appear before both "Big Wednesday" and "Matthew..."