Ukrainians protesting on Whitehall against alleged Russian army war crimes in Bucha.

Ukrainians protesting on Whitehall against alleged Russian army war crimes in Bucha.

Ukrainians protesting on Whitehall against alleged Russian army war crimes in Bucha.

Ukrainians protesting on Whitehall against alleged Russian army war crimes in Bucha.

A march and sit down protest by Extinction Rebellion (XR) activists in Trafalgar Square on first day of their 'April Rebellion'.

A march and sit down protest by Extinction Rebellion (XR) activists in Trafalgar Square on first day of their 'April Rebellion'.

Medics take part in march by Extinction Rebellion (XR) in Hyde Park on first day of their 'April Rebellion'.

Medics take part in march by Extinction Rebellion (XR) in Hyde Park on first day of their 'April Rebellion'.

A march by Extinction Rebellion (XR) in Hyde Park on first day of their 'April Rebellion'.

A march by Extinction Rebellion (XR) in Hyde Park on first day of their 'April Rebellion'.

A march by Extinction Rebellion (XR) in Hyde Park on first day of their 'April Rebellion'.

A march by Extinction Rebellion (XR) in Hyde Park on first day of their 'April Rebellion'.

Workers installing solar photovoltaic (PV) panels on an 1890s terraced house in Southwark.

Workers installing solar photovoltaic (PV) panels on an 1890s terraced house in Southwark.

Workers installing solar photovoltaic (PV) panels on an 1890s terraced house in Southwark.