According to this site it was made by nestle!

http://www.doyouremember.co.uk/memory.asp?memID=4072

The Secret Chocolate bar was made by Nestlé in the 80's and 90's and was one of the most delicious treats ever. It had a sort of bird's nest chocolate outer with a creamy mousse center similar to the inside of a Walnut Whip. They came in a white protective card sleeve and apparently had a gold wrapper with the word Secret written on it in purple.

Hi its probably been on this forum before but its wrecking my brain! Does anyone remember goldencup bars? Goldencup a member of this forum i was hoping at least could you help me!?!? they were really nice and i normally wouldnt bother searching so much but im desperately trying to prove my bf wrong as he thinks there was no such thing! please someone help me! i would really love it if there were some online pix of wrappers or who even made it!

Cheers