1912-1915 if the lady's up to date, and if that's a postmark of 1912 she's right on the cutting edge, so to speak, of hairstyle fashion

Very tight date window.
Lander seems to have been a photographer in Shanklin, Isle of Wight.
Another beauty, Caz. I love the man's face, he looks like he has a sense of humour

Cheers,
China