Waste no time in starting to keep records of times and types of noise and disturbance whilst you're deciding the best course of action and who to contact. Get noise on tape too if you can. See if neighbours are also bothered , and suggest they also keep records for future use. If its just noise and vibration, present your records and complaint to environmental health , and if you have reasonable grounds to suspect illegal activity, tip off the police, anonymously if you are nervous. Good luck.