* Beyond the Narrow Seas (2003)
* Under the Black Ensign (2005)
* In the Presence of the Enemy (2007)
* The Blood Command (2008)
* The Great War at Sea: A Naval History of the First World War (2014)
* The Irish Brigades in the Great War: A Record of the Services of Irishmen in the Irish Regiments of the British Army as Well as in the Connaught Rangers and the Irish Guards in the European Theatre (2015)
* The Scottish Brigades in the Great War: A Record of the Services of Scotsmen in the Scottish Regiments of the British Army as Well as in Other Scottish Battalions and Scottish Yeomanry and Mounted Units (2015)
* The Welsh Brigades in the Great War: A Record of the Services of Welshmen in the Welsh Regiments of the British Army as Well as in the Royal Welch Fusiliers, the Royal Monmouthshire Royal Engineers and the Welsh Guards in the European Theatre (2015)
* The Northumbrian Brigades in the Great War: A Record of the Services of Northumbrians in the British Army as Well as in the Royal Inniskilling Fusiliers, the Prince of Wales's Own Yorkshire Regiment, the York and Lancaster Regiment and the Green Howards in the European Theatre (2015)
* The Yorkshire Brigades in the Great War: A Record of the Services of Yorkshiremen in the British Army as Well as in the Prince of Wales's Own West Yorkshire Regiment, the King's Own Yorkshire Light Infantry, the Green Howards and the York and Lancaster Regiment in the European Theatre (2015)
* The Lancashire Fusiliers in the Great War: A Record of the Services of the Lancashire Fusiliers (and East Lancashire) Regiment in the First World War (2015)
* The South Lancashire Regiment in the Great War: A Record of the Services of the South Lancashire Regiment in the First World War (2015)
* The King's Own Royal Lancaster Regiment in the Great War: A Record of the Services of the King's Own Royal Lancaster Regiment in the First World War (2015)
* The Border Regiment in the Great War: A Record of the Services of the Border Regiment in the First World War (2015)
* The Royal Scots in the Great War: A Record of the Services of the Royal Scots (The Royal Regiment) in the First World War (2015)
* The Royal Welch Fusiliers in the Great War: A Record of the Services of the Royal Welch Fusiliers in the First World War (2015)
* The Royal Inniskilling Fusiliers in the Great War: A Record of the Services of the Royal Inniskilling Fusiliers in the First World War (2015)
* The Connaught Rangers in the Great War: A Record of the Services of the Connaught Rangers in the First World War (2015)
* The Irish Guards in the Great War: A Record of the Services of the Irish Guards in the First World War (2015)
* The Royal Marine Light Infantry in the Great War: A Record of the Services of the Royal Marine Light Infantry in the First World War (2015)