The Joint Committee on UK Vaccination and Immunisation halted last month in their attempts of progressing, saying it was still weighing the benefits and risks.
Almost 1.4 million teenagers will be included in the new rollout, but it is not identified when the jabs will commence.
They are presently offered only to those over-12s who have underlying health conditions or live with others at high risk.
However, some countries, including the US, Canada and France, are routinely vaccinating people aged 12 years old and over.
Whitehall sources say ministers in England are likely to accept the advice of the JCVI after an announcement on Wednesday.
It comes after Scotland’s First Minister Nicola Sturgeon mentioned on Tuesday that she was “hoping” to receive updated advice from the JCVI on the vaccination of 16 and 17-year-olds.
Ms Sturgeon stated that the UK’s four chief medical officers had written to the JCVI, asking them to look again at vaccination guidance for young people.
Universities Minister Michelle Donelan said in a declaration that she was “imminent and… people will get clarity soon”.
In the meantime, new research suggested that children who became ill with coronavirus mostly recovered within less than a week.
Across England, 223,755 under-18s have got the first vaccine dose, according to NHS data to 25 July.
It was earlier announced that under-18s would be qualified if they had certain health conditions, lived with someone with a low immune system, or were nearing their 18th birthday.
But a criticism after it arose, and GPs were advised to hold off inviting clinically vulnerable 12 to 15-year-olds to take a vaccine due to indecision over insurance.