Harrow Council is banning nearly 30% of people who use its tip - because they don't live in the borough.
The local authority is making the change to reduce queues and cut costs for Harrow taxpayers, it says.
Cllr Graham Henson, Harrow Council portfolio holder for environment, said: "With one stroke, we’re slashing the queues at the waste recycling centre and saving huge amounts of money.
"I’m fed up with people from all over the place bringing their waste to Harrow.
"My message to people from other boroughs is – we don’t want your rubbish."
Almost 30% of visitors to the tip are thought to come from outside the borough – after some other councils in west London shut their recycling centres to non-residents.
Harrow residents will need to bring their driving licence with them to the recycling centre as proof of address.
For those who do not have a driving licence, then proof of residence such as council tax bill, utility bill, bank statement and photo ID will be accepted.
Rubbish which can be dumped includes batteries, electrical equipment, domestic appliances, fluorescent tubes and mattresses.
The site is open every day from 8.30am to 4.30pm, including bank holidays.
It’s closed on Christmas Day, Boxing Day and New Year's Day.
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