No worries, Mr. @. Thanks for your explanation.
I believe you are indeed correct about the BA machine G-BIKB being the first 757 in Europe (proudly wearing the "British" titles, and named Dover Castle, was it?).
My first outing on a BA 757 was G-BIKK. Will never forget how it soared like a rocket when compared to the 732, with which I had had more experience up until then.
I love the 757.