Could a plasterer repair that section of the ceiling - or does the whole ceiling need re-plastering? About 9x5ft.

hi really depends on the condition of the ceiling, you can part plaster any area, need to take of all the loose and flakey parts first but any plaster would like to see the job 1st

There's different factors to consider.........construction of ceiling,wall units/trim possibly to remove etc.......the list goes on. It would probably be easier to get someone round to actually look at it & tell you exactly what needs to be done rather than a dozen or so people on here trying to guess with different answers which is what will happen. Carl.

Depends on the condition of the ceiling, a plasterer could repair part of the ceiling, take all loose stuff of first, but it better to over skim the whole ceiling.

its better to replaster the whole ceiling