Ok - Becky came home and went upstairs and showered.
Step Mum went to hospital.
Mum doesn't need to be in the house to know that she showered, over things would show that - use of shampoo, wet towels, etc.
If Nathan worked nights, he may go round to see mum for breakfast or just to drop things in. In the UK some people are collected for hospital appointments. So she goes off to hospital and he is left in the house, whilst she is in the shower.
He takes his chance to assault her and she is killed in the house. Loaded into the Zafira on the drive (where the Land Rover is parked).
He drives to his friends mums run down house, where she is partially dismembered.
He returns home and tells girlfriend he's been out making £ with the boys, but obviously due to criminality can't tell the police the truth so she covers for him.
The body lays in the other place partially cut up, when they are arrested. The others are told of the body by one of the 4 charged today, so agree to get rid of it but fail to do so.
JMO.
Sounds like a very plausible explanation....
the only parts I would perhaps change are
Becky came home at 8am........ a rather early time, imo, to return from a sleep over with a pal,but perhaps the friend was due to go somewhere that day, that didnt include BW and/or one of friend's parents dropped her back home on their way to work ( knowing how she didnt like to be out on her own ).
Anyway, she comes home about 8am and according to step mum, - goes into the shower at that time.
NW didnt work nights I dont think, he did takeaway deliveries in the evening, so would not be a case of finishing work at say 7am and then going on to step mums.
I agree re the collection of step mother for hospital. Quite normal thing to happen if she had regular appointments and I doubt she would want to drive herself, being as she was possibly having a treatment when at the hospital.
I dont think NW would use the KD/DDs mothers house, more likely to go straight to KDs house.
Rest of the scenario, I can well believe....
Ah, except the charge starts from Sunday February 22, which leads me to think that RWs body was not at the Barton Court address before this time..... that means possibly in the car boot prior to this.
So body is left at Barton Court on Sunday Feb 22 and then car is taken up to Wilton Close and left there, which ties in with neighbours comments that it was definately there from Monday 22nd, possibly earlier.