What order are jobs done in fitting a new bathroom

I would remove old suite and carry out first fix on pipework. Plaster any areas that need doing If required carry out first fix on electrics. ( shower cable/switches etc ) Set bath and shower tray Paint plastered wall area and ceiling Tile and grout floor, then tile and grout wall area Fix toilet, basin, shower door and 2nd fix all pipework Fix bath panel and seal above bath, basin and around floor area Job Jobbed

first of all you fit or adjust pipework ready for appliances this is called a first fix, then anything that has to be tilled on you fit first like bath and shower cusbical. then you tile bathroom and grout, then you can second fix anything else like shower door, shower screen so you can seal them against tiles to make water proof then toilet, basin and bidet so they look good against the tiling run a little bead of silocone seal around edges so there are no dark edges and test as you go. then the floor and then bath panel.

The order of things is decided by the team doing the job! how do we know! decommission 1st fix tile 2nd fix test and go! bit like that!