Tempest seems an odd name especially when we have a Tempest that will fly this year, an original one.
So 5 years until it flies, 10 years using it to verify design and systems concept for the service variant, then another 5 years debating numbers and cost grounds of final design followed by us buying an off the shelf US aircraft, that we will then modify and generally muck about with adding billions and a further 5 year delay to in service date… how am I doing so far?