It is all very well saying both sides need to move on....
Imagine your home, one day someone comes and says sorry this is ours now. We will allow you to live in a small shed. As a bonus we will pay you to wait on us. It wont be much because lets be honest you live in a horrid basic shed and you arent very refined like us so really you should bow to our superior culture. Ih you arent happy... well i could just report you for your attitude. Remeber what happend to the family down the street. Glad thats sorted, but you need to be more grateful for all the opportunities we provide (shack with huge rent, tiny wage, hard graft -but honest graft that will straighten out your morals). If caught using the language of the area you would be punished. Street names were changed to be more 'appropriate'. The schools would have to teach about thw superior new people and the feral others. Anyone speaking out was risking their and their families safety.
Some people fight against this, but they are overpowered, others accept there is nothing they can do. Those who try and fight back cause retaliation on those who tried to live in peace.
Generations later, the property never returned to the original owners. No appology for what was taken, no recognition of the oppresion.
No accountability for what was done in government name.
If this was you, would you move on.... jolly good show governor you were right my family didnt deserve what they had, those richer people were right to just take what they wanted. 
Maybe an acceptance that England never should have helped themselves to land in NI, Scotland and Wales. They never should have forced their will on these countries. The danaged caused is still impacting today. The languages were oppressed.
I never really thought of it growing up, but now i see it. Now the comments like why teach welsh, no one uses it now days (well why ?) Why do scotland want to change things and be independent (well they didnt get the choice to become dependent, this was forced upon them through invasion). Why do NI want to bring up the past, there dead now nothing will change that. True but the hillbrough disaster would be the same, but there has been acountability and answers now. Dont the people of BI deserve the same respect.
People can move on, once the truth is in the open, people can not move on while the truth remains hidden,/obscured or twisted. Im sure if you speak to people involved in hillbrough disaster they would agree. Having the truth has aided healing and provided some closure, although the past should not and can not be forgotten.
When Germany lost the war, the attrocities were laid bare and condemed. The difference here is England never lost the war and the war crimes have never been laid out for all to see and judge.