I can assure you both that Captain George Carter wrote an awful lot of letters to the referee's provided by the lads who wanted to join the 1st LG back in those days just before war broke out in South Africa.
Find My Past says:
Memorial: Holy Trinity, North Wall, Guards Chapel; 1st Life Guards, Windsor.
No 2009 Smith, G. - 1st Life Guards Queen's South Africa Medal Paardeberg, Driefontein, Johannesburg, Diamond Hill, Wittebergen, Relief of Kimberley.
Died at Windsor, 07/03/01
The plaque at Stanton (how did you manage to get such a great photo without reflection and how did you know it was there) says interred at Windsor. Perhaps if I wrote to someone at the Guards Chapel, they may be able to tell me. I think I should see if I can obtain his Service Record.