As the original poster, I have had a nice apologetic email from Network Rail recognising the problems we had. I understand signage will be improved and he confirmed, although I would not have known it that the barrier staff would have let us back in - and out again I hope! The lack of litter bins is due to security concerns. What a society we live in. It still feels wrong to leave my rubbish on LNWR trains for someone else to clear up.
We don't often travel by train but recently travelled to London and experienced the delights of Euston, Marylebone and Victoria. Everything there was logical, informative and allowed us to relax, go to the toilet and travel as necessary. It is that phrase "don't often" that is important in the context here - many posters have experience of New Street and other stations and their particular ways of doing things. The first time traveller doesn't have that advantage.
The other thing I have find at New Street is that I cannot easily find the way to catch the buses. Indeed Northampton could do it better but at least there is a bus that says bus number xx is due to arrive at wherever in 10 minutes time. But where is "wherever"? Back to the app - unless you have 2 minutes to make it. Anyhow, I don't wish to have a go at Northampton, it is alright - if it doesn't flood......
My son commutes to Euston regularly. Least said about his experiences the better but probably mirrors many others on this forum.
Finally, we found that in certain areas of London - e.g. Euston Road and on Victoria Station - we had breathing difficulties which we don't normally have. It felt like Chlorine or something like that. Maybe electrical or ozone? It started me coughing uncontrollably and I do not suffer from asthma. The weather was dry and sunny, early spring and the air quality map in these area showed that the quality was average as it was in other areas where we had no problems. Anyone experienced this? Curious. Bizarre even.
Well done Network Rail - now please follow it through.