Noisy pipes and joists

Please could you look at the photos and advise on the joists...
The plumber redid our bathroom replaced bath tub with a shower cubicle and changed all the pipes . Now we have problem with noisy pipes... I have a other thread called noisy pipes... I have been advised to post it here for advice too.
Much appreciated
Nisha

I could be wrong, but isn't the phenomenon called "hydraulic hammer" or something similar? It is caused by the water pipes moving and striking other pipes and/or masonry, joists, etc. when taps are turned on and off and seems to be far worse in houses which are on high pressure pumped mains.

I know because I had an issue with our house which had an unregulated pressure of nearly 9 Bar when we moved in (we are very close to an underground pumping station). Our solution was to put a pressure regulator in just downstream of the stop cock and this allowed me to turn the pressure down to 5 Bar. I then clipped as many pipes as I could to joists or wallsand finally I separated some of the pipes so that they couldn't hit each other. That reduced the amount of hammer considerably.

I notice that you appear to have an absolute mare's nest of pipework in there with lots of pipes close together yet nary a pipe clip in sight, so I suspect that your problem might be reduced if you could stop pipes banging together or against the joists, etc. by adding clips every 300 to400mm. In addition try stuffing some insulation (e.g. mineral wool , fibreglass etc) between the pipes and also between the pipes and what they are resting on to see if it makes a difference

Thank you for the info.
We didn't have any loud pipes noises like thses ones before we redid the bathroom two weeks ago.
What do you think about the joists? Is it cut ok or too much?

I have added the link for you to listen to it...
Much appreciated..

Thanks and regards,
Nisha

Looks like pipes are touching and friction could make the noise as then expand and contract.