The pair of Team Tom singers go head to head, singing Time After Time by Cyndi Lauper.
Before the performances, Sir Tom takes Lucy and Nadine and the rest of her team for a mentoring session the world famous Abbey Road studios.
Sir Tom says in the show on Saturday night: "Of course, the Beatles recorded here.
"Outside is the famous zebra crossing, I crossed it in 1960… something!"
In the battle rounds, each of the coaches will partner the acts in their teams a set of head to head sing-offs.
Both acts will share the share and the song but not the victory.
After each performance, their mentor will pick one winner and potentially send the other home.
The loser's only chance to stay in the competition comes from the other coaches.
Once again The Voice sees the return of the steal twist, allowing each coach to pinch one of the acts that their rivals reject for their own teams.
However they can only select the one act to steal, meaning they're sure to be super picky with their decision.
It's a double bill of battle round performances on The Voice UK this weekend
The first half of The Voice UK 2017 battle rounds will air Saturday night, 25th February at 8:30PM.
The second half will be back on ITV on Sunday night at 7PM.