The growing number of 4G LTE and 5G use cases imposes new demands on mobile networks; including enhanced coverage, improved network performance and even support for mission critical networks. To address the coverage and resilience requirements mobile network operators are increasingly studying, or in some cases implementing, an integrated terrestrial and space based transmission network for cell site backhaul. This talk will review the actual implementation of such techniques on the EE mobile network and additionally, review the latest developments in 3GPP non terrestrial networks and how this will enable truly heterogenous networks.