P207 CEEFAX 207 Mon 27 Oct 21:04/14       The long-awaited "Big Bang" in the City of London began in chaos today as a computer failure stopped trading. The Stock Exchange's new price display system, SEAQ, was switched off at 9am and was not restored until 10am. Dealers had to resort to traditional face-to-face methods to obtain prices. A Stock Exchange spokesman said the fault had lain with SEAQ's associated TOPIC price display system, which had been overloaded by eager customers. Market report............BBC1 127 More details....BBC2 228/BBC2 254 The technology...........BBC2 701