There was a weekend, 17/18th Feb 1990, when the new juice rail was all but laid, and there was some event on in the area I think?. A number of shuttles were run, with additionals using the bay. I have photos of 205001/029 arriving in the bay with 2Z77, 14.00 Southampton to Eastleigh via Fareham, whilst in the other direction they reversed in the Down platform (eg: 2Z44, 13.55 Eastleigh to Southampton with 205008/030).
Of note was 207017 which failed at Swanwick, possibly on the 12.20 Southampton to Portsmouth Harbour and was later dumped in Fareham yard.