As Cosmological probes become more sensitive and cover bigger volumes we are starting to reach the limits of what can be measured by a single survey. Researchers are therefore looking at ways to combine different survey types to help extract as much information as possible and so further our understand the Universe. I will present initial forecast methods for constraining growth of structure by combining a Photometric Weak Lensing Tomography survey and Spectroscopic Redshift Space Distortion survey over a shared sky volume and discuss the competing effects that determine the benefits of a cross-correlation method.