The guns were withdrawn to a new position at 18.00 and were back in action on 25 September. During the Battle of Morval (25–28 September) the battery fired on the villages of Morval and Le Transloy as well as continuing its CB work. Having neutralised enemy batteries, the tactics were to give them another five minutes of intense fire every 12 hours. The battery then moved to near Trônes Wood and during the Battle of Le Transloy (1–18 October) it fired on the village and on enemy trenches. As the British slowly advanced, the battery moved up to new positions near Leuze Wood on 24 October. Here it suffered a number of casualties from hostile artillery fire. The Somme offensive was winding down, but 110th Siege Bty had periods of intense activity on 5 and 13 November supporting yet more attacks on Le Transloy, as well as more CB tasks. At the end of November the battery handed over its guns and stores at Leuze Wood to 4th Siege Bty and took over those of 199th Siege Bty at Le Foret on 1 December, the battery transferring to the command of 21st HAG on 10 December. The battery supported the minor Operations on the Ancre, January–March 1917, by shelling Fritz Trench and Pallas Trench. The relative quiet along the front was broken in mid-March when the German Army began its retreat to the Hindenburg Line (Operation Alberich). This entailed much work for the siege gunners in moving their guns over the devastated Somme battlefields to get back into range of the enemy. 110th Siege Bty moved up by sections to Nurlu, Sorel-le-Grand, and then Heudicourt by 8 April, from where it spent several weeks shelling Villers-Guislain, Villers-Plouich, Gouzeaucourt and Gonnelieu in front of the main Hindenburg positions, before finally moving up to Gouzeaucourt on 7 May. From here it fired almost daily 'destructive' or 'neutralising' tasks against enemy gun positions. In June 1917 Fourth Army HQ moved to the Flanders coast to join in a break-out from the Ypres Salient that never happened. 21st HAG was then taken over by Third Army and 110th Siege Bty remained with it, then was attached to 89th HAG (2 June–10 July). On 13 July it was transferred to 67th HAG with First Army, involving a long move north. 110th Siege Bty pulled out of Gouzeaucourt on 9 July and moved by road by Ervillers, Tilloy and Nœux-les-Mines, arriving at Annequin on 14 July, where it prepared gun positions and moved the howitzers in on 16 July.