Shandy -don't worry about lack of answer re furniture. I made an offer to purchase some kitchen 'whites' at the flat to see me through until I purchased new ones. On the list they showed as 'negotiable' so I sent in (via my solicitor) an offer, and never ever received any reply to that.
When I arrived, I did not know if they would be there or not - there were not!!! In fact that was best, as I managed for a couple of weeks until new ones arrived and did not have the problem of disposing of them.
Did you include these items in your Fixtures and Fittings form? If so, unless you were hoping to get some money for them,you can leave them. If you did not, then you would best to dispose of them - as otherwise you could be charged the cost of the new owner getting rid of these.
As has been said, it is your FORMER home, not your current one, take with you the good memories, and put it behind you. Concentrate on whatever will be your new home later this year.
I am sure that during May, your son and daughter can make the trip to visit their old home (if they want to). They may not, just preferring to keep their memories as to how it was for them.
Do involve them in whatever move you make to a new home. They are adults and should be there giving you both physical and moral support.
I could not have made my move last year without the support of my son, who came down from Cheshire to stay with me the last few days and actually followed me down to WsM before returning home and my daughters both in London and in WsM.
My daughter here involved the whole of her family on moving day, to help getting everything in position, whilst her husband sorted out my televisions, etc.