Residents offered shelter and comfort to those affected by the terror attack on the capital by sharing the hashtag #SofaForLondon on social media.
Taxi drivers provided free rides from the cordons around London Bridge and Borough Market that left many cut off.
Places of worship across many faiths, including gurdwaras, joined hotels and businesses in providing food and shelter.
All this came just days after Manchester residents opened up their homes and offered help to concert-goers affected by the horrific terror attack at the Manchester Arena last month.
They used the hashtag #RoomForManchester to offer help to distraught people after their night of music ended in tragedy with a suicide bomber blowing himself up at the arena, killing at least 22 people and injuring 59 others.
Londoners immediately reached out to help after yesterday's horrific attack in which three knife-wielding attackers unleashed a terror rampage here, ploughing a van into pedestrians on the iconic London Bridge before stabbing revellers in a nearby market, killing seven people.
Moss, who had lost his mobile phone, was unable to get home after police put a cordon between Borough Market and Elephant and Castle.
He borrowed a phone from a journalist to let his parents know he was safe and spotted #SofaForLondon on Twitter.
"After that I went towards Vauxhall and found Holly and Mary who very kindly gave me a place to stay," he was quoted as saying.
Staff at the Royal Oak pub in Tabard Street, Southwark said they gave shelter to around 150 people following the attacks.
Neil Coyle, Labour candidate for Bermondsey and Old Southwark, was just minutes away from the scene of the attack and said the response from Londoners was "amazing".
Anthony Myers tweeted a heart-warming offer to "anyone caught up in" the terror attacks: "Tea, salt and vinegar crisps and comfy cushions. All the essentials. #sofaforLondon #LondonBridge".
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