Justin,
I have spent some time looking through the 293Sq ORB, initially for the HQ at Pomigliano for 1943 and 1944 and found one entry for your father on 17 August 1944. He flew a Warwick back to Foggia on this date after a spell of leave. This led me to the Foggia detachment ORB and Flying Officer Haywood makes many appearances in this record. See below for examples. It seems his service number was 124412.
Hope this provides you with the info that you require. I have the full ORB on file and please let me know if you require anything further.
QP