I have recently acquired the Royal Doulton tankard shown below:
 

 
The base marking indicates that it was maufactured between 1902-1930. Can anyone provide information about the competition or event for which it might have been awarded?
 
Thanks
exmpa

BSA (along with a number of other gun and ammunition manufacturers) often sponsored one of the competitions held at national and local open meetings, particularly around the early 1920s. There seems to be something of a pattern so far as BSA are concerned, with them normally (but not solely) providing a rifle and possibly also prize money at meetings organised by the Society of Miniature Rifle Clubs, and Doultonware at other meetings, such as those run by counties.
 
Take as an example the meetings run in 1922 and reported in the SMRC Handbook for 1923.  That year there were four SMRC meetings.  The BSA-sponsored competitions at these meetings, and the prizes provided, were:
London, BSA No. 12 rifle for the Grand Aggregate.
Perth, BSA No. 12 rifle for one of the competitions in the Grand Aggregate.
Bisley, BSA No. 12 rifle and 25 cash prizes for one of the competitions in the Grand Aggregate.
Cleethorpes, BSA No. 12 rifle and 21 cash prizes for one of the competitions in the Grand Aggregate.
 
The Handbook also includes the results of five meetings organised by counties, as follows:
Essex, nothing from BSA.
City and County of London, Competition 1 (Through the Ranges), Second - BSA silver mounted Doulton jug, Third - BSA silver mounted beaker.
Surrey, Competition 1, BSA No. 12 rifle, fitted with sights.
North Riding of Yorkshire, nothing from BSA.
Middlesex, Scratch Teams of 4, 1st place, 4 silver mounted Doulton beakers.
 
Similar prizes can be found in other SMRC Handbooks around the time, and further cases, I think, are reported in The Rifleman.  Sadly as the Doultonware items are not dated except by reference to a hallmark on those which are silver mounted, it is now almost impossible to tie a BSA Doulton piece to a particular person or meeting.