Official MoneySavingExpert insert:
This thread's from 2011, but we've checked (on Friday 5 Feb 2016) and it's still working. Check the webpage below or download the Tapwater.org app
Back to Katiehound's original post...
As far as I can see as long as you have a refillable water bottle (I don't think you have to have a specific model) you can top at various locations for free. This could be quite useful in hot weather!http://www.tapwater.org/refilling-stations
The idea is that we stop buying bottled water, not only for the financial cost but the cost to the environment in the form of discarded plastic