UPDATE 1-Spirent trading in line, names Burns CEO

* Spirent names Burns as CEO

* Says trading in line

* Expects performance for the year to be in line

(Adds details, quote)

LONDON, Nov 6 (Reuters) - British telcoms testing firm Spirent Communications SPT.L named insider William Burns as its new chief executive on Thursday and said it expected its earnings performance for the year to be in line with forecasts.

Burns was previously chief executive of Spirent’s Communications group, responsible for the overall leadership, strategy and investments across the Communication unit businesses.

The company, which tests systems and equipment for Cisco CSCO.O, AT&T T.N and others, also saidtrading for the period since June 29 to the current date was in line with the board's expectations.

Revenue grew by 9 percent, operating profit by 31 percent and earnings per share by 44 percent compared to the third quarter last year.

“We continue to anticipate that the earnings performance for the year will be in line with our expectations,” they said.

Reporting by Kate Holton