Thanks ladies - there are a few Isla's around here, but they are all under the age of 2/3, so there aren't any in DD's class, let alone the whole school as it is very unusual here for a girl over the age of about 4.
Funnily enough mucky I don't think of Evie and Eve being that similar, and much much prefer Eve :)
I know what you mean about the name threads, there was a whole thread the other day basically slagging off the name Emme/Emmie and saying that it wasn't a real name etc. I quite proudly went and said that one of mine was an Emme and that people never pronounce it wrong (as they tried to say!). Our Emme totally suits her name and I absolutely adore it.
Tarti So are your DT's Maggie and Rose - so, so gorgeous! One of Jasmine's middle names is Margaret after my GP - definitely agree that it is a strong, classic name!
ALL Jack is a bit more popular but I think Jack and Will is really lovely - I normally like a little bit more unusual names than the usual Tom/Ben etc, but Jack and Will would definitely be on my future boys list! 
And Cora is beautiful - never really heard it before and I love it.
Honestly, we had such a nightmare with naming our girls - after they were born they were Jasmine, Sienna and Fern; Sienna then to Amaya, and then concluded with Jasmine, Emme and Alexa.
Before born, favourites were also Maya and Azaria.
Then came the nightmare of middle names too - god that was a stressful time! 