BLOOD tests will resume at hospitals across mid Essex following the NHS cyber attack last week.
"We are grateful for the hard work of staff at trusts and GP practices who are still suffering IT issues but have found ways to work around this, as well as the patience of people who have been affected".
He said that in his area around "half" of practices were affected by the attack, including some cases of "whole practices" being forced to shut down.
NHS England says it is continuing to work with GP surgeries to ensure that they are putting in place a range of measures to protect themselves.
Dr Anne Rainsberry, national incident director at NHS England, added: "There are encouraging signs that the situation is improving, with fewer hospitals having to divert patients from their A&E units".
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"In addition to protective real-time monitoring of national NHS IT services and systems, which were unaffected by this issue, we are supporting NHS organisations by undertaking cyber security testing and providing bespoke advice and action points".
"Although we have never seen anything on this scale when it comes to ransomware attacks, they are relatively common and there are things that you can do, that everyone can do, all of us can do, to protect ourselves against them", he said.
However, practices across the North East are still asking patients to consider delaying contacting their practice unless they really need to for the next few days to allow time to clear backlogs caused by the attack.
Security minister Ben Wallace said that the NHS had followed "pretty good procedures" in dealing with the attack.
Speaking to BBC Breakfast, Mr Wallace said that IT staff had worked around the clock over the weekend to patch security systems and restore files at NHS trusts across the country.