With Courtney Lawes suspended for two games for using his knee on Mario Ledesma in the 13-9 win over Argentina, the Stade Francais lock is in pole position to return to the England engine room.
And the 32-year-old, who was one of the players of the RBS Six Nations, is ready to stake a claim to play in every game in the tournament.
"I've just got to go out there and play as well as I can," Palmer said.
"I knew right from the start that in this World Cup if I wasn't starting the first game, there would be the opportunity for me.
"The nature of the World Cup is that there's a squad of players that gets used. Every time you go out you have to go out and do your best, and hopefully the coaches will notice that and you'll get into the side next time."
Palmer was restricted to a cameo performance against the Pumas - and the former Wasps ace was pleased with his impact.
"I came on and went straight into a lineout, took the line-out, had a little carry after that and we ended up scoring off that play," he said. "So that was obviously the best way to enter a game.
"It's difficult when you are only on for 13, 14 minutes to actually really get a grip on how you are playing. You don't have long enough on there to really decide, 'I was really good or I was really bad'."
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
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Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
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The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.