Continued as "Fellowship"
"An expository & devotional magazine."
Apparently it was a "magazine launched especially to encourage Brethren outreach".
The Witness merged with The Harvester in 1980. Ten years later the latter had a UK circulation of around 2,000 and was in severe financial difficulties which led to its demise in 1995.
From https://www.preciousseed.org/history.cfm
It is hard to believe that the work of Precious Seed Committee has been going for sixty years. In 1945 several meetings were held in Taunton, Devon, for prayerful consideration of the situation which then existed. For some time brethren had been concerned about the lack of teaching with regard to New Testament church principles. Out of this desire came the magazine Precious Seed which would seek to be ‘a magazine to encourage the study of the Scriptures, the practice of New Testament Church principles and to stimulate interest in Gospel work’. Those early brethren have now all been called home but the pattern has been followed by their successors.
See https://www.assemblytestimony.org/