Noise from new bar in our community.

Our community comprises of around 24 flats and 8 "locals" on the ground floor. The owner of two joined locals has allowed them to be made into a noisy dance bar run by a third party. Attempts to control noise output at up to 3am have not worked, both of music noise and customers on terrace in front of local.
Since our community rules state that:
No activity shall be carried out which causes offence to residents
No person shall make or allow such noise as to disturb any residents of the community
Each owner shall be responsible for the behaviour of their tenants, guests and visitors.
- should we be continuing our unsuccessful attempts to get the bar owner to restrict noise, or is it the owner of the local who we should pursue for being in breach of the above rules? Can we force him to evict his tenant?
Should he have informed the change of use from previous use as offices, we understand that application for bar licences have been applied for.
The owner is of course part of our community, but lives elsewhere as he doesn't own a flat here.
Thanks for any advice!