| Long Path Partners, LP | 
					8,868,366 | 
					£26,250,363 | 
				
			
				
					| Norges Bank | 
					8,477,694 | 
					£25,093,974 | 
				
			
				
					| Schroders plc | 
					8,259,311 | 
					£24,447,561 | 
				
			
				
					| Old Mutual Plc | 
					8,034,653 | 
					£23,782,573 | 
				
			
				
					| Ausdrill International Pty Ltd | 
					7,153,594 | 
					£21,174,638 | 
				
			
				
					| Mission Trail Capital Management LLC | 
					5,601,464 | 
					£16,580,333 | 
				
			
				
					| Canaccord Genuity Group Inc | 
					5,310,000 | 
					£15,717,600 | 
				
			
				
					| C.C.M Barbour | 
					4,409,689 | 
					£13,052,679 | 
				
			
				
					| Pinetree Capital Ltd | 
					4,122,083 | 
					£12,201,366 | 
				
			
				
					| Invesco Limited | 
					3,900,032 | 
					£11,544,095 | 
				
			
				
					| Patrick  Barbour | 
					3,858,478 | 
					£11,421,095 | 
				
			
				
					| FIL Limited | 
					3,011,609 | 
					£8,914,363 | 
				
			
				
					| Norges Bank | 
					2,804,462 | 
					£8,301,208 | 
				
			
				
					| Jupiter Fund Management plc | 
					2,739,836 | 
					£8,109,915 | 
				
			
				
					| Haregreave Hale LTD | 
					2,672,961 | 
					£7,911,965 | 
				
			
				
					| Aberforth Partners LLP | 
					2,653,116 | 
					£7,853,223 | 
				
			
				
					| Herald Investment Mgt | 
					2,458,277 | 
					£7,276,500 | 
				
			
				
					| Highclere International Investors Ltd | 
					2,230,162 | 
					£6,601,280 | 
				
			
				
					| Soros Fund Management | 
					2,226,710 | 
					£6,591,062 | 
				
			
				
					|  L G Crisp and Mrs H Crisp | 
					1,855,604 | 
					£5,492,588 | 
				
			
				
					| The Wellcome Trust Limited | 
					1,794,838 | 
					£5,312,720 |