TCAS FAN
Maybe Para 5.2 of the airports document linked to at post #300 above?
Southampton Airport has for many years lagged behind other UK regional airports in providing a comprehensive range of European air services to its core catchment population. Much of this deficiency can be attributed to Southampton Airport’s limited operational capability, which means it cannot cater for the larger narrow-body aircraft used by most short haul airlines, hence the need for the runway starter extension.