Ive been wondering about that too, but how much of the change in £/$ is due to the falling pound and how much is due to the strengthening dollar. The more it is down to the dollar, the more I expect gold to amplify the dollars fall in gains, when it does eventually fall back. But if its more down to sterling falling, then if that strengthens us brits will have big 'paper' losses (bigger than my current losses).
I bought most of my position in January and have been buying bits and pieces since then at varying prices and am currently sitting here with a loss... wishing Id put the money in the bank, at least until now, but hope to be proved right, sooner rather than later