With qualification complete, Director of Rugby Phil Davies was left eyeing home advantage in the quarter-finals. For the second game in a row, the Scarlets were forced to come from behind but just like at Toulouse, they did so in emphatic style.
Tommy Bowe went over on fifteen minutes from Kieran Campbell's well-judged kick after Paddy Wallace had banged over a penalty inside two minutes. The Scarlets' defence stood firm, despite the loss of Popham for ten minutes following a high tackle on Wallace, who staggered off before half-time.
Popham roared back onto the field to score his team's first response, stepping out of the sin bin and over for a try four minutes before the break. Paul Steinmetz guided a penalty between the posts on the stroke of half-time but Ulster's 11-7 lead always looked frail and they turned to face the mighty wind for the second half.
Ulster battered the Scarlets line but lacked a clinical edge and they were made to pay a heavy price. With the wind at their backs, the away side could finally clear their lines and the tries duly came.
King glided over on fifty-eight minutes following Gavin Evans's intitial break to give the Scarlets the lead for the first time, but more tries were soon to follow.
Stephen Jones missed a conversion but Morgan Stoddard capped his first start at regional level with an impressive try moments later before Peel went over in the corner following a scintillating break by Matthew Watkins for the bonus point. Thomas wrapped up a remarkable afternoon's work for the now highly-fancied Welsh region who look set for home advantage in the quarter-finals.