Psr777 - unfortunately many cabin crew SOPs in BA have been developed entirely without flight crew input, which in a number of instances has led to false expectations about what can and can't be done in flight. The example of contacting Medlink from one of our short haul aircraft is a case in point. This shortcoming has been identified by the CAA and currently there's something of a shake-up going in in cabin crew training to produce a co-ordinated approach to events on the aircraft. From an entirely personal point of view I would suggest you call for a doctor immediately that a passenger is taken ill, rather than follow the dogma of contacting Medlink first. We can call Medlink whilst you're doing that, but its far better to have a doctor on the scene than a one at the end of a radio.