Richard Hill has labelled part of Worcester's Aviva Premiership performance against Northampton last weekend as "unacceptable".
The Warriors returned from Franklin's Gardens with two losing bonus points courtesy of a remarkable four-try blast that brought them back from 37-3 adrift to just six points behind. But Hill admitted Worcester cannot afford such a dreadful start when they take on London Irish at Sixways tonight.
"We had a big inquest on Monday to find out why we went 37-3 down, because that is unacceptable," he said. "I think some of the players were in awe of the opposition at the start, and we can't afford for that to happen again."
He added: "London Irish will be full of confidence after getting their first win of the season last weekend, so we will have to make sure we start well.
"Our attacking game is working really well and we are producing good rugby, but we will have to concentrate on our defensive play against Irish.
"Irish will be a different prospect to Northampton as they will play a lot of rugby and move the ball around."