From BBC: Per the Met’s twitter feed, police responding to a 2nd incident...
Responding to a 2nd incident at Borough Market...
At nearby market
Police at both locations
talkRADIOVerified account @talkRADIO 2m2 minutes ago
#BREAKING Police say they are dealing with a separate incident at Borough Market just yards from #LondonBridge http://bit.ly/2qSNDqP
Nick Kjeldgaard @NickKjReports 3m3 minutes ago
#BREAKING: Metropolitan police confirm they are responding to a SECOND incident at #BoroughMarket. Social media reports say people stabbed.