The UK government has taken further action to limit the spread of coronavirus.
Shops selling non-essential items have closed, along with libraries, playgrounds, outdoor gyms and places of worship.
Weddings and baptisms are banned but funerals are still allowed.
Gatherings of more than two people not from the same household are banned.
People are only to do one form of outdoor exercise a day on their own or with a member of their household.
The other acceptable reasons to leave the house are:
The government has also said that key workers may leave the house to take their children to school and that children may move between the homes of separated parents.
If people have to go outside – to buy food for example – they must stay more than 2m (6.5ft) apart from others.
Cafes, pubs, restaurants, nightclubs, theatres, cinemas, gyms and leisure centres have also been told to close. The move is part of social distancing measures to minimise non-essential contact.
People with flu-like symptoms – such as a dry cough and high temperature – have been asked to self-isolate at home to avoid infecting others.
Social distancing is important because coronavirus spreads when an infected person coughs small droplets – packed with the virus – into the air.
These can be breathed in, or can cause an infection if you touch a surface they have landed on, and then touch your face with unwashed hands.
The less time people spend together, the less chance there is of this happening.
Self-isolating means staying at home and not leaving it, other than for exercise. Don’t go to work, school or public areas during this time.
If possible, you should not go out even to buy food or other essentials. If you are unable to get supplies delivered, you should do what you can to limit social contact when you do leave the house.
Everyone who shows coronavirus symptoms – a fever of above 37.8C, a persistent cough or breathing problem – and everyone who lives in the same house or flat as someone with symptoms.
The person with the symptoms should stay in a well-ventilated room with a window that can be opened, and keep away from other people in the home.
People are being advised not to ring NHS 111 or their GP to report their symptoms unless they are worried.
About 1.5 million people with very serious health conditions are being contacted by the NHS and urged not go out at all for at least 12 weeks. This is being referred to as shielding.
Others in the same household, and carers, can go out as long they observe proper social distancing.
The most vulnerable group includes:
The government says it will work with local authorities, supermarkets and the armed forces to ensure they get supplies of essential food and medicines.
You should keep at least 2m away from a vulnerable person (such as pregnant women, the elderly or those with an underlying health condition) during any period of isolation, according to Public Health England.
Limit time spent together in shared spaces such as kitchens, and keep all rooms well-ventilated. If they can, the vulnerable person should take their meals back to their room to eat.
A vulnerable person should use separate towels from the rest of the household. If possible, they should use a separate bathroom. If that is not possible, the bathroom should be cleaned every time it’s used (for example, wiping surfaces with which you have come into contact).
People living with someone in isolation should wash their hands often, using soap and water for at least 20 seconds – especially after coming into contact with them.
Personal waste (such as tissues) should be double-bagged and put aside for 72 hours before being put in your outside bin.
Other countries have also been taking steps to limit the spread of the virus: