LONDON (Reuters) - British sweets to DVDs retailer Woolworths Group plc. has been fined £350,000 ($684,100) for failing to disclose information to the market in a timely manner, Britain's financial regulator said yesterday.

"Woolworths' failure to disclose vital information led to a false market in its shares for 29 days," Margaret Cole, director of enforcement at the Financial Services Authority (FSA) said in a statement.

"This sort of failure is unacceptable."

The FSA said the retailer failed to inform the market of a change in terms to a major supply contract at its Entertainment UK unit - which was likely to have a significant effect on its share price - until January 18, having known about it on December 20.