Seriously, how I can GBP/USD go, is anything possible?

I'm wondering how high gbp/usd can actually go? Is anything possible, and could it go to 2.1 or how will that affect the UK economy and other things? I keep seeing EUR/JPY go up and up and up non-stop for the past 8 month, but then again, JPY int rate is so low and they don't appear to be raising it at all. But for GBP, they've been raising rates for a while now and it appears to almost be at an end? I dunno. Just curious. Any insight? Thanks

Anything is possible, it's probable that is what one should worry about
But re. anything vs. USD, a big slow term mover is the move away from USD as the reserve/vehicle currency of international finance. This vacuumed up an enormous amount of dollars in the past, but as countries move from CB reserves in $'s (and gold) to CB reserves that match flow requirements - which puts upward pressure on Eur/usd and GBP/Usd - you can continue to expect a weakening Usd. The problem is that it's pretty much a whole new ball-game, and it's hard to predict how it will play out. (Japan is a slightly different problem, as their main trade issue is to maintain competitiveness with China)