England's friendly match against Honduras in Miami has been temporarily suspended due a thunder and lightning storm.
Both sets of players were taken off the pitch 23 minutes into the match, with the score at 0-0, and it is hoped they will return in around half an hour.
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The Metropolitan Police Federation, which set up the official JustGiving site, said it felt a "suitable amount" had been collected.
There is no evidence the Westminster attacker Khalid Masood was associated with so-called Islamic State or al Qaeda, the Met Police said.
Janet Ajao said in a statement: "I do not condone his actions nor support the beliefs he held that led to him committing this atrocity."