This new (as of autumn 2017) installation has water tap, bike repair stand with tools and a floor tyre pump.
Situated after the road crossing at Cheesefoot Head, beyond the farm buildings Temple Valley on the right hand side (if you are heading away from Winchester).
A great location if you are starting a long ride from Winchester to top up your water, check tyre pressures and carry out any bike maintenance.
Images of the water taps