The Secretary of State said that the reduction in overall numbers was not part of a handover of security responsibilities to the Iraqis, but instead reflected the completion of some security sector reform tasks - developing the Iraqi security forces capabilities, for example by training the trainers and those guarding institutions. It also reflected improvements in the configuration of UK forces.
The statement notes a breakdown on major units that will be in theatre including some elements of air:
Aviation support will continue to be provided by five Merlin, eight Sea King Support Helicopters, and four Lynx. In May, there will be a reduction of two Sea King helicopters. Our support to the Iraqi Navy and our contribution to the coalition taskforce in the North Arabian Gulf, will continue unchanged.
No mention of AT based in theatre? Was the Submission to Ministers provided by the Army?