Three men drove a van into pedestrians on London Bridge before going on a knife rampage through Borough Market.
Asked if the Metropolitan Police needed more resources, Dick said: "We will want more resources to help us and I am sure the same will be being said in the intelligence agencies".
It is expected the market will be ready to re-open next week, she added.
A 28-year-old was arrested at a residential address in Barking, while a 27-year-old man has been arrested following a search of a property in Ilford.
"It's an incredible place to be".
"We will certainly do more activities with people of all faiths".
The Red Cross is urging people to "take a ride for London, eat a dish for London and say cheers for London".
'Anyone who saw them on the night would have thought they were genuine. 'I would describe it as pandemonium really'.
Police said the weapons were possibly chosen to prevent them being picked up by metal detectors. "What they did encourages me".
Borough Market remains closed but on Saturday the final cordon was lifted at London Bridge following last Saturday's barbaric attack. "They are a diverse bunch", he said.
Mayor of London Sadiq Khan said one of the greatest things about the capital is "how we pull together in the face of adversity". In the past week or so we've seen 18 people arrested across various parts of London and outside. We need to continue to learn and adapt as a nation and indeed as a police service. "Living our lives as citizens of London".
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"We had no idea what was going on, we didn't know if it was us shooting or if the bad guys had guns".
Reverend Alan Green, Rector of St John on Bethnal Green, said: "There is huge resilience here".
Cole said that when he told the 200 people sheltering in the pub's basement that they were safe and would soon be evacuated, "I got a big round of applause".
The attackers had previously tried to hire a seven-and-a-half tonne lorry before using a rented van to ram pedestrians, police said.
Detectives suspect the carnage inflicted could have been even worse if Khuram Butt had not failed to secure the vehicle because his payment did not go through.
Sky News reports that after the terrorists were shot dead by the police on London Bridge, they opened the van and discovered more than a dozen Molotov cocktails inside.
Police have arrested 19 people in connection with the attack.
The warped killer and his two accomplices, Redoaune, 30, and Zaghba, 22, were shot dead by police who arrived at the scene in eight minutes.
The realistic-looking phoney bombs were actually disposable water bottles wrapped in masking tape.
The attackers had wound duct tape around the handles and in one case a leather strap had been attached to the handle and hung around an attacker's wrist.
Eleanor Kelly, chief executive of the council, said: "We understand that the cordons have had a massive impact on local residents and businesses and would like to thank those individuals for their patience, goodwill and hospitality".