A boy aged 16 and man aged 18, have been arrested on suspicion of terror offences.
They were both arrested in raids at two addresses in North West London.
The raids took place on Friday, the Metropolitan Police said.
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This week marked the three year anniversary of the London Bridge terror attack.
The attack on June 3, 2017, left seven people dead and 48 injured as a white van mounted the pavement and crashed in pedestrians.
Three men got out of the vehicle and began stabbing people nearby Borough Market.
All three suspects were shot dead by police.