Plumbing a new bathroom

[ln1234]

We are getting 2 ensuite bathrooms created, and the builder has had them plumbed using 15mm Hot/Cold Copper Pipes to the shower, and then feeds from there to the sink/toilet. I'm a bit concerned that the pipes have not been secured with clips and there is no lagging on any of the pipework (all internal to the house), but he assures me this is how it should be. Should I be worried about this? What are best practices in running pipework like this?

Thanks Guys

 

[Bahco]

I would insist on pipe clipping, more professional and could cause vibrational noises.
As for lagging, its a good idea to lag the hot pipes but I think would be down to you to do yourself as it probably would be an extra which would be chargeable.
Get down the merchants and buy some and do it while you have access to the pipes.