Hi Tam,
1/14 Foot was not the same regiment as the 1st Foot (that is to say, the Royal Scots). 1/14 means the 1st Battalion of the 14th (Buckinghamshire) Regiment of Foot, which later (in 1881) became The Prince of Wales's Own (West Yorkshire Regiment).
It may seem strange that a Scot joined an English Regiment, but there was some fairly energetic recruiting going on in 1855 within the British Army to make up for the fact that it had been drastically reduced after Wellington's victory at Waterloo in 1815, but now faced a major campaign against Russia in the Crimea.
The 1st Battalion, 14th (Buckinghamshire) Regiment of Foot did indeed serve in all the places you mentioned.
1854 Malta
1855 Crimea
1856 Malta
1858 Ionian Islands
1860 West Indies
1864 England
1866 Ireland
1867 Malta
1868 India