This table only counts clasps to men who first served in the IY before serving in other units. This excludes men who served in other units first earning a clasp, such as Elandslaagte, and then transferring to the IY.
This blogs updates the information in British Battles & Medals (Hayward, Birch & Bishop, Spink 2006 7th edition) which states the IY only qualified for the Wittebergen battle clasp and, "other 'battle' clasps, [were] granted whilst attached to other units". This is clearly not quite accurate.
The IY only qualified for three battle clasps in unit strength; Diamond Hill, Wittebergen and Johannesburg. The other battle clasps; Belfast, Dreifontein and Relief of Mafeking were earned by "odd men" and further work is required to understand exactly how these men came to earn the clasp.
|Orange Free State||21,373|
|Wepener||3||Relief Force, issued in error|
|Relief of Mafeking||2|
||GW Tindall, servant to the Earl of Errol, specially enlisted in the Imperial Yeomanry|
|Relief of Kimberley||1||GW Tindall|
|Defence of Kimberley||0|
|Defence of Ladysmith||0|
|Defence of Mafeking||0|
|Relief of Ladysmith||0|