Passenger train derails in southern England

A passenger train derailed near Lewes, East Sussex, leaving three carriages overturned and injuring 20 people, two of them seriously.

Just 24 hours later, a second train derailed in Essex, prompting safety concerns about tracks buckling in the extreme heat.

Rail bosses insisted the network was safe, but investigations are ongoing.

The incidents have disrupted services significantly and raised questions about infrastructure resilience.