The 25-year-old midfielder scored a brilliant individual goal in the south coast side's 4-1 victory over Steve Bruce's men on Saturday, having been selected to face Chile and Germany earlier in the week – as have team-mates Jay Rodriguez and Rickie Lambert.
And Lallana says there were never any fears that his Three Lions selection would impact his performances for Southampton, with manager Mauricio Pochettino ensuring the England trio were in the right frame of mind.
|11/1||Adam Lallana is 11/1 with BetVictor to open the scoring against Chile|
“We were focused on playing, pressing, taking the game to Hull and creating chances.
“[Thursday] was a great day, not just for me but also J-Rod [Rodriguez] and Rickie [Lambert], but it was business as usual.
“Southampton is the bread and butter for us all – it’s where we earn our trade.
“With how well we’ve been doing, we just wanted to keep that up. We’ve got momentum and confidence, and that shows in how well we’ve been doing.”
Lallana was selected for the England squad to face Ukraine in September 2012, though did not make an appearance, and is pleased to be returning alongside his Saints team-mates this time.
“I can’t wait,” he added. “It’ll be great to share it with a couple of other Saints lads, and it’ll make it that bit easier.
“Playing for your country is the pinnacle, and it’s a very proud moment for me and my family.”