Thousands of patients were waiting for routine treatment at Southern Health in May, figures show.
NHS England figures show 4,115 patients were waiting for non-urgent elective operations or treatment at Southern Health NHS Foundation Trust at the end of May – up from 3,961 in April, and 3,921 in May 2024.
None of those had been waiting for longer than a year.
The median waiting time from referral at an NHS Trust to treatment at Southern Health was six weeks at the end of May – the same as in April.
Nationally, an estimated 7.4 million treatments were waiting to be carried out at the end of May, relating to 6.2 million patients – the lowest treatment figures since March 2023 and patient figure since April 2023.
And nearly 3% of people on the waiting list for hospital treatment had been waiting more than 52 weeks in May, up slightly on the month before.
The Government and NHS England are aiming to bring this figure to under 1% by March 2026.
Danielle Jefferies, senior analyst at think tanks The King's Fund, said: "A year on since the general election, the Government has now set out its long-term vision for how it'll turn things around in the NHS."
She said it will include delivering more care into the community, a greater focus on prevention and early intervention, and enhancing digital and innovation.
However, she warned the details of the Government’s 10 Year Plan for Health are "too vague".
She said: "In the coming months and years, the Government will need to be honest with the public over what trade-offs we should expect in the care we receive as it sets about delivering on its planned reforms."
Separate figures show 1.7 million patients in England were waiting for a key diagnostic test in May – the same as in April.
At Southern Health, 3,147 patients were waiting for one of nine standard tests, such as an MRI scan, non-obstetric ultrasound or gastroscopy at this time.
Of them, 115 (4%) had been waiting for at least six weeks.
Nuffield Trust deputy director of research Sarah Scobie said the data underlines how "difficult" it will be to meet waiting list pledges alongside deeper reforms.
She added: "The waiting list for planned care was growing for almost a decade before its peak in 2023, so while it is good news that it has come down from its peak, until the NHS is able to meet the growing demand for healthcare, we will continue to see delays and frustration."
Tim Gardner, assistant director of policy at the Health Foundation, said the national fall in waiting times represent a "small step" towards Labour's commitment to restore the 18-week standard.
He welcomed the Government's "ambitions", but added "concrete action" is needed to transform the healthcare service.
Daniel Elkeles, chief executive of NHS Providers, said the figures show NHS staff are "working flat out to deliver more care to patients", as waiting lists fall.
Mr Streeting said the recovery of the health service "is only just beginning, and it is fragile".
He added: "It is only with NHS staff and the Government working together that we can rebuild our NHS so it is there for patients once again."