Abstract: In this talk I will discuss ongoing work on using head on gravitational shock wave collisions in higher dimensional spacetimes to estimate the gravitational radiation emitted in transplanckian collisions. I will start with a quick review of the motivation for this study within the large extra dimensions scenario which predicts black hole production processes that could be visible at the ongoing proton-proton collisions at the CERN, Large Hadron Collider (LHC). In the remainder of the talk I will explain how to set up a perturbative framework to obtain an approximation for the future development of the metric after the collision, and how to extract the gravitational radiation wave form to first order. This gives an improved estimate for the loss of energy into radiation, in the black hole formation process. I will conclude by discussing how we are attempting to extend the calculation to second order and the challenges with extracting the gravitational wave form.