I've seen the news reports, and apparently it started with a white van or truck driving through a crowd of pedestrians on London Bridge, and then 3 men calmly walked away and went to the Borough Market nearby where they stabbed restaurant goers inside of restaurants. The 3 assailants were finally gunned down by London Police when they saw the attackers had on suicide bomb belts (which were later found out to be fake). As far as I know, 7 people were killed, and 48 were injured in these two attacks.

My heart goes out to the UK, as it is still reeling from the Manchester bombings, and now this happens. I think the recent attacks were brought about by Osama Bin Laden's son, who wanted vengeance for his father's death and released a video calling for attacks like this to happen.