Marjory & Phyllis & Elsie - Cathedral Close - Hereford - 1921

I am fairly sure that this was taken on the Cathedral Close lawns, at the rear of the Broad Street houses, which were demolished in the 1930s, to improve the view of the Cathedral. One of them was the Pritchard's house. I have compared the roofline seen here with the well known photo* of the front of the houses. They seem to match fairly well, although the angles of viewing are very different.
* www.ipernity.com/doc/philsutters/28523077