British popstar Paloma Faith and hip-hop performer Dante Santiago complete the lineup of mentors, who will help the coaches polish up their acts ahead of the battle rounds.
[Cerys Matthews: left - Ana Matronic: right]
Welsh star Matthews will reunite with Sir Tom Jones, who she previously collaborated with on a cover of 'Baby, It's Cold Outside'. Santiago will help his former bandmate will.i.am, while Ana Matronic is teaming up with Jessie J.
'New York' singer Faith will help The Script's Danny O'Donoghue.
The Battle Rounds on The Voice UK will feature each of the coaches whittling down their 10 acts to a final five ahead of the Live Shows. The singers will duet and battle it out performing the same songs to impress their coach and the guest mentors.
The Voice UK airs on Saturdays at 7pm on BBC One.
> 'The Voice' UK - The teams so far...
> 'The Voice' UK - How does it work?
Watch Cerys and Tom Jones's collaboration from his Reload album below: