From the Introduction to the February 1977 issue:
"Way back in the mid-sixties the BSFA produced the first issue
of a magazine called TANGENT which was described in the
advertisements as a fiction magazine for or rather featuring
"top professional writers and bright newcomers". It lasted
two issues and then folded. Following comments I made to Tom
Jones it was suggested that the magazine be resurrected with
myself as editor. This suggestion was put to the BSFA Committee
who decided that a trial issue should be produced with a view to
producing TANGENT two or three times a year. ... This is the
trial issue; whether or not it is successful is up to you."
1978:
[#4]
[#5]
1977:
[#1]
[#2]
[#3]