In relation to submitting new evidence on appeal
An ECM or Immigration Judge is entitled to look at circumstances / evidence after the date of decision only if they relate to circumstances before or at the time of decision.
There is a distinction to be made between new evidence and additional evidence.
New evidence: New evidence which postdates the decision cannot be considered by the ECM. This evidence should be acknowledged in the Review and the ECM should indicate that this should be used to support a fresh application.