England will be encouraged by their performance last Saturday against New Zealand, despite their 20-15 loss. This week Stuart Lancaster's squad will be bolstered by late-arriving Northampton and Saracens players after their exploits in the Aviva Premiership Final.
England will also be strengthened by the return to fitness of scrum-half Danny Care and inside centre Billy Twelvetrees. Lancaster has conceded that this will lead to fairly wide-ranging changes to the starting line-up for the second Test at Dunedin.
"I've got to get the balance right. That's going to be the key thing because the priority has to be to win the second Test. If we win that then we have got a series that we can win.
"It is a must-win game and that will be the overriding decision that will influence where I go on selection."
Here is a look at five players that Stuart Lancaster should be bringing into the starting XV for the all important second Test.