its not a foreign investment. as you can see in the screenshot, average price is 3.14, when current price is 3.15, but im still getting a return of -£3.23?
The buy price is 3.15, the sell is 3.00 (as of now anyway). Scroll down oh so slightly to see the sell price 
oh my bad, desktop makes it bit more clear, as its called current price, thankyou.