@hcs I'm not a currency expert, though I know a little bit about this sort of stuff.
It appears sterling will go down further, quite a bit from here -- if Brexit happens (especially a "hard Brexit," with no alternative trade / work / travel / shipping, etc. arrangements in place) -- or seems like it will happen. The currency will *probably* eventually recover from that, but you would probably have to hold on to it for quite some time to turn a profit.