why has the 757-200 BA livery got this?

The BA livery for the 757-200 has a black ring around its nose! Can anyone explain why???
And staff, could you please remove it? It doesn’t look right on the plane (like its had a nose replacement). Here are some pics:image

It’s always been there I think British airways has some aircraft with some rings like that I believe


Discussion in this thread British Airways 737-400

The black rings were on the 757 and the (now retired) 737-400. It is to do with dealing with electrical/static charge.

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