Schools in London are closing amid rare red warnings over extreme temperatures.
Temperatures are forecast to soar to as high as 37C until Friday, according to the latest forecast for the capital.
Scores of schools across England and Wales announced they would close or finish early on several days this week to protect pupils amid the extreme heat.
In some cases children have also been told they can wear PE kit rather than full school uniform. Some after-school clubs and trips have also been cancelled.
There are a number of schools in London which have announced they will closing completely or will be closing early - or parents can pick up their pupils early.
Here is a list of schools affected in London:
Sydenham School, in Lewisham, a secondary school for girls, with 1,500 pupils, is closing at 12.15pm on Tuesday (June 23), Wednesday, (June 24) and Thursday, (June 25).
A letter to parents ad teacher Emma Wijnberg said: "I am writing to inform you of some important changes to our schools schedule due to the extreme heat forecast this week.
"All students in Year 7, 8 and 9 will be dismissed at 12:15pm on these days. Students are expected to make their own travel arrangements to return home safely. Year 10 and Year 12 students will be dismissed after their Period 3 exams have finished. Year 10 parents will shortly receive a separate email about the rearrangements for afternoon exams this week.
"We will provide supervision for any students who are unable to leave at 12:15pm. If your child needs to remain in school after early closure, please contact us as soon as possible so we can make appropriate arrangements.
"The Battle of the Bands event, previously scheduled for Thursday 25th June, is now cancelled due to the extreme heat. It has been rescheduled to Wednesday 1st July, 6 - 8.30pm, all tickets previously purchased will be valid for this date."
Cheam High School in Sutton, that has around 2,000 pupils, will run shorter school days until Friday.
A statement on the school website reads: "With it expected to reach up to 37 degrees outside, many classroom spaces will become hotter than this, especially in the afternoon, which are not conditions conducive to learning when rooms are filled with students and staff.
"Due to this, we are going to run compressed days from 8.30am to 1.10pm from Tuesday 23rd June. This will ensure that students will still have 5 lessons each day, although each lesson will be slightly shorter. This will mean that they will not have to be out at lunchtime in the heat but disruption to their education will be minimised. We will be cancelling period 6 and work will be set for Year 12. Year 12 exams will continue as normal.
"Students who wish to have a school meal before leaving school will be able to purchase this either at break time or at 1.10pm before going home.
"Please ensure that your child has a full water bottle at the start of the day which they must refill at social time. Please also ensure that they are wearing high factor suncream.
"Our plans at present are that CheamFest will go ahead as planned on Friday evening. We will update you on Friday about next week, when we hope to return to a normal school day."
Fielding Primary School and Nursery in Ealing will close at 12pm on Tuesday and remain shut all day Wednesday and Thursday before reopening on Friday.
A message on the school website reads: "School, ARP and Nursery close at mid-day on Tuesday 23rd June, all day Wednesday 24th and all day Thursday 25th June. School re-opens on Friday 26th June.
"We are closing as a result of the red weather warning for extreme heat. We appreciate that many families will be managing children at home in very challenging temperatures.
"Therefore, our approach to remote learning will be deliberately simple, flexible and focused on keeping children connected with their teachers and classmates, rather than trying to replicate a normal school day.
"Remote learning by Microsoft Teams starts on Wednesday. Further information to follow by email. EMS lessons, Clubs and Childcare will be refunded.
Oaks Park High School, in Sutton, will close in the afternoons from at 12.20pm on Tuesday, Wednesday and Thursday.
The school stated on its website: "The safety and wellbeing of our students and staff must remain our priority. Despite the measures we have put in place to keep classrooms as cool as possible, the forecast temperatures and heat warnings mean that remaining on site for the full school day is likely to become increasingly uncomfortable and potentially unsafe."
Pupils will be provided with work to complete at home on each of the three days.
A number of schools have given parents the option to pick up pupils early.
Belmont Junior School, in Haringey, North London, has said parents can collect their children at 1.30pm on Tuesday, Wednesday and Thursday where feasible. Provision will be provided for families unable to do so.
Parents at All Saints Benhilton Primary School, in Sutton, have told parents and carers they can choose to collect their child earlier at 1.15pm this week.
Heber School, in East Dulwich, Southwark, has cancelled a number of activities and trips and said parents can pick up children from1.30pm from Tuesday until Thursday, There will be provision for pupils that remain.
This is an ongoing list and is being updated.
© The Standard Ltd