I think all these dresses are lovely and very fashion forward, with interesting colours and silhouettes , they would be beautiful as you swish around the room.
But the Op will be sitting behind a table, so all that will be seen is her top half. And the NHS isn’t really known for sartorial elegance and being fashion forward . The interviewers will probably be a consultant or two and someone from HR, not Vogue magazine.
Id wear either
a plain dress with a blazer ( lots of lovely linen ones around now , ecru is spring like, will be in your palette and is good for work paired with contrasting colours underneath)
a blazer with a plain top and smart wide leg trousers
a non patterned dress with an interesting top half ( like a collar ) and sleeves without a blazer . Probably needs to be A line or cocoon shape as shifts and some waisted dresses can be unflattering if you have a tummy (ask me how I know ). And if you don’t have anything on top of the dress you need to feel super confident with the shape.
Yes these might be boring and conservative choices but it’s a very conservative profession . No one ever missed out on a medical post because their clothes were not on trend.
Let’s face it, every single man ever appointed to for a medical post in the history of the NHS has worn to interview
a suit with collar and tie
smart trousers with a Collar and tie or
suit with an open neck shirt
And they all got the jobs.
You want the interviewers to be focussed on your wonderful Cv and interviews answers, not wondering what is going on with the waistline of your dress and why you keep adjusting it.
Sorry I know that’s not a “ Style and Beauty “ type opinion .