Boots are being polished and buttons are being buffed ahead of today's annual inspection of the Woolwich-based Kings Troop Royal Horse Artillery (KTRHA).
The unit is responsible for firing royal and ceremonial salutes, and took centre stage at the funeral of Baroness Thatcher, bearing her coffin from St Clement Danes to St Pauls Cathedral.
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Five teenagers have been injured - two seriously - after an unprovoked acid attack at a train station in Essex.
The Blackwall Tunnel in south-east London has re-opened this morning after a 20 hour closure that caused travel mayhem.
One of the teenagers was left so badly burnt doctors say he may lose his eyesight.