how many years to see this price?
i doubt it will ever reach this price though i would think more about a 10 thousand pounds price i think it might reach this in about 5 yearsUsing pounds is a subtle way to say that you expect it to reach 20 thousand dollars
5 years seems ok to me and Id be more than happy with that timeslot 
BTCitcoin has more potential to reach £1000000 even more than that as time is passing away BTCitcoin getting more attention around with it's adoption and acceptance, many big companies and merchants are thinking about this innovation to start accepting it as normal payment method for their daily use so hold it tight soon it would be happen.