If you are looking for a "proper paper" (official report or newspaper coverage), the Manchester Evening News is the primary local publication that covers these high-profile galas in the city.
If the "Boks" you mentioned refers to a specific person or a slang term for a boxing event (often called a "boxing gala"), this could be the star-studded fundraiser you are thinking of. Boks: gala w Manchesterze
This most likely refers to a Black Tie Gala Dinner featuring Springbok players, often organized to celebrate recent successes (like their back-to-back World Cup titles) or as part of a charity fundraiser. If you are looking for a "proper paper"
There is also a well-known annual held in Manchester. There is also a well-known annual held in Manchester
While primarily a football event (featuring legends like Gary Neville and Jamie Carragher), it frequently attracts international sports stars and celebrities.
The have a strong connection to Manchester, often using it as a base or hosting events during UK tours.