Signage for the London Stock Exchange Group is seen outside of offices in Canary Wharf in London, Britain, August 3, 2023.
"Impacted securities are now in regular trading," LSEG said in a notice published on its website.
FTSE 100 (.FTSE), FTSE 250 (.FTMC) and International Order Book securities - shares listed in London by overseas companies - had continued to trade normally, the exchange said.
It is the second time LSEG has flagged a disruption to trading in smaller stocks on the London market in less than two months.
In 2019, the London Stock Exchange suffered an almost two-hour outage that hit FTSE 100 and midcap stocks, which LSEG said was caused by a “technical software issue”.
Persons:
Toby Melville, LSEG, Thomson, Danilo Masoni, Alun John, Amanda Cooper, Kirsten Donovan
Organizations:
London Stock Exchange, REUTERS, Tullow, CMC, FTSE, Thomson Reuters, Reuters, Thomson
Locations:
Canary Wharf, London, Britain, LSEG