In Bolton, if you're hosting a wedding marquee after midnight, the noise limit will be determined by the relevant licensing provisions, particularly as they pertain to outdoor events and noise regulation. Unfortunately, the specific noise limit figure for after midnight isn't detailed in the council records reviewed.
However, it is important to consult with the council to ensure compliance with licensing laws and to consider noise complaints under the Environmental Protection Act. You can reach out to the council's licensing unit for guidance on the necessary licenses and noise regulations for your event.
For more details, you might find the Bolton Council Noise Information helpful.