High temperatures and sunshine are predicted for the first week back at school for all pupils across the UK. Despite the official meteorological end of summer, warm weather is expected to last for several days, with the mercury hovering around the mid-20s in many parts of the country. But the Met Office said it is still “touch and go” whether some areas will tip into official heatwaves. Temperatures are predicted to reach highs of 28 degrees C (82.4 degrees F) in London on Monday and rise to 29 degrees C (84.2 degrees F) on Tuesday. Northern areas are also expected to see an increase, with Liverpool seeing highs of 23 degrees C (73.4 degrees F) on Monday and 27 degrees C (80.6 degrees F) on Tuesday. Both Northern Ireland and Scotland are set to share the pleasant conditions, with highs of 23 degrees C (73.4 degrees F) and 22 degrees …