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There is always : Gladly, my cross-eyed bear.

I support New Zealand and anyone who is playing Australia ! 

Looking at the CWGC site they have Lachlan as a 54 year old Deckhand, Service No 1909/SD, son of the late Malcolm and Janet McLeod, of Port Charlotte, Isle of Islay, Argyllshire. He is shown as on the books of HMS Pembroke 1, which was an administrative centre at Chatham but he was not necessarily serving on that base.
The record does not show where he died, nor where he is buried, only that he is recorded in a roll of remembrance. This is "The United Kingdom Book of Remembrance" which commemorates United Kingdom casualties of the two World Wars who were not formerly recorded by the Commonwealth War Graves Commission. The men and women remembered here are presently commemorated solely by their database and register entry. The Commission will continue to investigate the grave location details.
I note that many of the entries are from the period 1917 to 1923 and include quite a number of nursing staff. I wonder if some of these were casualties of the influenza epidemic. Others may well have belatedly succumbed to wounds received during the war.

You say Lachlan died at Port Charlotte. If you are sure of this then it seems likely that, being a local man, he was buried in the vicinity.

I've looked for newspaper reports of his death or burial but have found nothing to date.

Maec

A check on the Commonwealth War Graves Commission website shows George (HGC) Jenkins (No 12725) served with the 11th (Reserve) Battalion of the Devons and died 24 Feb 1915. He is buried in Cathays cemetery, Cardiff. There is reference to an address (parents / wife ?) at 22 Loudoun Square  Cardiff.  The notes attached to the entry indicate that, in common with several others, no headstone was included in the original burial order. Whether this was something to be done later or was left to the family to do is not clear.

The Long long Trail website (longlongtrail.co.uk) explains that: "most of the British infantry regiments had a number of Reserve Battalions during the Great War. They were responsible for training of recruits and of men returning to duty after being in medical care or away for any other reasons."
The 11th (Reserve) Battalion of the Devonshire Regiment was
Formed in Exeter in November 1914 as Service battalion, part of K4.
November 1914 : came under orders of 100th Brigade, original 33rd Division.
10 April 1915 : became a Reserve battalion.
1 September 1916 : converted into 44th Training Reserve Battalion in 10th Reserve Brigade.

From this it seems that the 11th Bn was not a Reserve Bn at the time of George's death but was probably in training and homeland guard duties.

It may also pay you to check the Military Records on Ancestry to see if they have more information there. I am unable to access them at the moment.

Maec