Hi Annie
He is a member of the London Scottish Rifle Volunteers. The cloth is called Hodden Grey and was chosen so as not offend members by choosing a particular tartan.
As Volunteers they attended one evening a week, with a two-week summer camp. The National Archives has no records and recommends contacting ‘local record offices’. Or trying contacting -
http://www.gcompany.org.uk/History%20of%20London%20Scottish.htm A number of men volunteered during the Boer War. Many served with the Gordon Highlanders, and you may find a record for these on Findmypast, and on the medal roll on Ancestry if you have a name.
The rifle is the Martini-Henry which was made 1871 to 1891. The longer ejecting lever was introduced after the failings during the Zulu War. So suggests after c1885. One problem is that part-time soldiers were the last to receive new equipment so it could even be later. If you contact the above association they may be able to tell you when the London Scottish gave up the Martini-Henry, or when they changed the sporran badge to the cross of St Andrew.
Ken
