Hello Alltogether, as I have heard so far, Network Rail wants to ban trains with open sewage discharge from their lines. The consequence is that a lot of carriages need retention tanks beeing fitted on (fix costs) and the running costs (emptying the remains) will be also worth noting. Who will pay for the extra amount of work? And is it actually possible to install retention tanks on the old carriages? Isn't it a massive change on an historic carriage? There will be also a higher rate of unusable toilets (Retention tank is full)... The few charter trains are only a drop in the sea and the extra effort is financially not plausible. Is there a chance, that there'll be an ecxeption for the few railtours on the NR? The heritage railways will surely continue to use the old end reliable toilets, which are easy to handle on a volunteer run railway.