I have decided to move platforms from Windows to Macbook. I have paid licences for Lightroom 5 and Photoshop CS5 which I cannot afford to buy again. Can I migrate my licences from Windowds editions to Mac editions?
Lightroom's serial number will work on either - it's a cross platform licence.
You can do a cross platform transfer for Photoshop, but only on shipping versions, so you'd either have to upgrade to CS6 or sign up for the $9.99 a month Photographers Bundle which includes the latest versions of Photoshop and Lightroom.