England head coach Stuart Lancaster admitted there was plenty of room for improvement after his side's 54-26 victory over the Southern Barbarians composite side at Kimberley's GWK Park.
Lancaster gave his second string a run-out and they rewarded him with a first win of the South African tour. Christian Wade claimed a hat-trick and Thomas Waldrom scored twice as England ran in eight tries, but they conceded four of their own and endured some uncomfortable moments on a hot afternoon.
And Lancaster felt his side would have to improve their discipline for the second Test against the Springboks in Johannesburg on Saturday. When asked for his thoughts on the performance, he told Sky Sports 1: "Mixed emotions I think would be the fair assessment."
He added: "It's very difficult coming here playing against that type of side and also the altitude. I think the boys learned a lesson, I think the boys in the stand in particular learned some lessons about how we are going to need to manage it on Saturday.
"We'll take the positives, but equally there were some areas of technical discipline and obviously our penalty count and work around the breakdown we need to improve and adapt to the referee."
England made a sluggish start as the Barbarians claimed the first lineout and number eight Jacques Engelbrecht was driven over for the opening try after just two minutes.
Lancaster added: "We gave them a start we didn't want to give them.
"Playing sides like this you want to start well and be technically disciplined and we didn't.
"They got 7-0 up, I thought we had a good period then and we got some ascendancy back in the game, but again there were periods of inconsistency in our play which put us under pressure.
"But also equally I'm pleased with a lot of the players and how they worked and put their hands up."