Digging about in the Music Box archives I found this magazine article.
The launch was a glitzy affair with press parties buzzing with celebrities of the day and attended by all the original Music Box presenters: Martin Buchanan, Sunie and Simon Potter.
The marketing and PR departments along with the production department had been working their little socks off to make this an event to remember. There was a lunch at the Roof Gardens in Kensington High Street where a soon to be Music Box presenter Julie Brown the 1984 disco dance champion, showed off her skills to an admiring audience.
There was a swish lunch at the Cafe Royal in Piccadilly and then finally the piece de resistance! A fabulous evening at Stringfellows nightclub to which the whole of London’s media were (unintentionally) invited, complete with break dancers and a very special broadcast opening show which brought the house down.