Gyms and non-essential shops in all areas are expected to be allowed to reopen when England's lockdown ends.

On Monday afternoon, PM Boris Johnson will explain the detail of England's return to the "three tier system" when lockdown ends on 2 December.

While parts of the tier system will be tougher, the 22:00 GMT closing time for pubs and restaurants will be relaxed, alongside gyms and shops reopening.

And mass testing will be introduced in all tier three areas, the PM will say.

Mr Johnson will say rapid testing with military support, as used in Liverpool, will form part of the stricter system.

Testing will also be rolled out for care home visitors across England from next month - with every care home resident able to have two visitors tested twice a week.

It means people who live in care homes will be able to hug relatives by the end of the year, the government has said.

Meanwhile, the ban on outdoor grassroots sport is also set to be lifted.

• Christmas get-together plan backed by UK nations
• Plan to end England's outdoor grassroots sport ban
• Spending Review will not spell austerity - Sunak
• What are the rules in your area?

More areas are set to be placed in the higher tiers - high risk or very high risk - after lockdown, No 10 has said.

Details of which tier every region of England will be put into are expected on Thursday.

Gyms and non-essential shops have been closed in England since 5 November, but are expected to reopen in all areas. Gyms were previously allowed to open in tier three, despite initially being told to shut in some places.

Under the new plans, last orders in pubs and restaurants allowed to open will remain at 22:00, but customers will have an extra hour to drink up.

However, it has been reported that pubs in tier three will only be open for takeaway - while those in tier two must serve substantial meals, even to outdoor customers.

The PM had hoped to announce arrangements for the Christmas period on Monday, but this has been delayed until at least Tuesday to allow the Scottish and Welsh cabinets to agree the plans.

It comes after the government said the UK's four nations had backed plans to allow some household mixing "for a small number of days" over Christmas.

One option that was discussed in meetings this weekend was that three households could be allowed to meet up for up to five days, according to the BBC's deputy political editor Vicki Young.

The plan for extensive community testing in tier three areas follows a pilot programme in Liverpool, where more than 200,000 people were tested and which the government said contributed to the fall in cases there.

Tier three areas will use the 30-minute lateral flow tests that were deployed in Liverpool - and it aims to offer them a way out of the highest level of restrictions.

Mr Johnson is expected to tell MPs that rapid testing will "help get the virus back under control and keep it there".

As well as rapid tests, repeat testing will also be offered so that the close contacts of confirmed cases may not have to self-isolate.

Instead, they will be able to take a test every day for a week and will only need to isolate if they test positive.

Repeat testing is due to be trialled in Liverpool on Monday. If it is considered successful, it will be expanded to care homes and the NHS in December, and to the general public in January.

Mr Johnson is expected to tell the House of Commons: "The selflessness of people in following the rules is making a difference."

The increase in new cases is "flattening off" in England following the introduction of the nationwide lockdown measures, he will say.

The prime minister will say "we are not out of the woods yet", with the virus "both far more infectious and far more deadly than seasonal flu".

"But with expansion in testing and vaccines edging closer to deployment, the regional tiered system will help get the virus back under control and keep it there," he will say.

On Sunday, the UK recorded another 18,662 confirmed coronavirus cases and 398 deaths within 28 days of a positive test. The total includes 141 deaths which were omitted from the 21 November figures in error.

Mass rapid testing has already been extended to 67 areas in England and parts of Wales, but Downing Street said the government would now offer many more tests with additional logistics support for every area in tier three.

In Liverpool, Public Health England said the tests found an extra 700 people who had the virus without any symptoms and who may not have been detected otherwise.

Downing Street also said weekly testing would be expanded to all staff working in food manufacturing, prisons and the vaccine programme from next month.

While some measures are expected to remain the same as those in the previous three-tier system, others are expected to be strengthened to protect the progress made during lockdown.