Amos K ... absolutely OUTSTANDING photo!!
BG583 was also in Northolt the same day (3rd August '73), but whether it was 'before' Lyneham or 'after' I cannot say.
However ...
Northolt, Sept '73
7th - BG583/G
11th - BG583/G
and in between it went to ATL at Stansted for checks.
Northolt, Nov '73
9th - BG579/D
21st - BG579/D
and as far as I know these were the last Indian AF Connie's in Northolt. In fact, they were almost the last Connies in Northolt ... one more, a USN EC-121M visited in January 1974. I can't recollect any more since then.