Newham has been recognised for a "significant improvement" to the borough's parks, according to a report.
Charity Parks for London published its Good Parks for London report, which celebrates the capital's parks and green spaces and assesses boroughs in a number of categories.
Newham has risen seven places in the league table, though it remains 22nd best overall.
The improved rating justified the council's decision to move park management in-house, according to cabinet member for environment James Asser.
He said: "Insourcing has enabled us to be more responsive to the needs of residents, to contribute positively towards residents leading healthier, more active lives and allowed us to deliver a far better service overall.”
Two of the borough's parks - Plashet Park and Central Park in East Ham - received Green Flag awards this year.
Cllr Asser added: “We know there is huge demand from residents for good parks and lots of people and community groups are working with us to achieve that."
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