Sender account changes on email after entering 'to' field
I have 3 email accounts on my iphone, my default one is virginmedia and when i hit 'new mail' it gives me a blank form with the from address as my virginmedia account - which is perfect.
But if I then put an addressee in the 'to' box, it changes the from address to one of the other accounts! bizarre!!
My default account is correctly set to virginmedia - any ideas? Thanks in advance.
iPhone 5s, iOS 7.0.4