On 24 June, Nottingham was one of seven warships from the Royal Navy present in Kiel, Germany, to celebrate the re-opening of the Kiel Canal. A few weeks after the start of World War I on 4 August, the Admiralty decided to attack German patrols in the Heligoland Bight on 28 August with the destroyers and cruisers of the Harwich Force and a flotilla of submarines. Despite some confusion at the highest levels of the Admiralty, Admiral John Jellicoe, commander of the Grand Fleet, dispatched the 1st LCS and five of his battlecruisers to reinforce the Harwich Force. During the battle, Nottingham helped to sink the light cruiser and was not damaged herself. Several months later, the Germans bombarded Scarborough, Hartlepool and Whitby on 16 December and the 1st LCS was escorting Vice-Admiral David Beatty's battlecruisers in response when it encountered a German light cruiser and a half-flotilla of torpedo boats. Nottingham was not in range to engage before the squadron turned away to follow the battlecruisers. During the Battle of Dogger Bank, the ship helped to sink the armoured cruiser on 23 January 1915. After the battle, the squadron helped to escort the crippled battlecruiser home. Shortly after the battle, Nottingham and her sisters were transferred to the 2nd Light Cruiser Squadron by 18 March, although the squadron was also assigned to Beatty's battlecruisers. On 18 June 1915, the ship was detached to reinforce the 3rd Cruiser Squadron during a patrol across the North Sea. Nottingham and the other ships were attacked several times by German submarines, and the armoured cruiser was hit in the bow by a single torpedo from on 20 June, but managed to return to Rosyth under her own power. Battle of Jutland Almost a year later, the ship participated in the Battle of Jutland on 31 May–1 June 1916. The 2nd LCS screened the battlecruisers during the battle. Nottingham helped to repel an attack by German torpedo boats around 16:26 during the first phase of the battle, the "Run to the South". After spotting the main German battlefleet at 16:30, the 2nd LCS followed the Beatty's ships in a turn to the north fifteen minutes later. During the turn and afterwards, they were fired upon by eleven German battleships at very long range without significant effect. Their late turn meant that they now trailed Beatty's battlecruisers and were now even with the battleships of