Without the flood Endurance would have been available until 2015 and the 3 x Mk 3 ICE Lynx would have probably supported her until then on a stand alone maintenance support package, meaning the the last trained crews (air and ground) would have extented to see her out of service operating on the bespoke ICE release to service. After 2015 it was always going to be hard to justify the military/aviation ice patrol for the reasons stated above. The flood just shifted everything left.
Off topic the flight then moved onto the Carrier/Ocean as HDS support and flew a shed load of hours in that role. I'm not sure anybody has thought of how we are going to support that role when Wildcat arrives and the Seaking/Lynx has gone?