I hated all the inconsistencies with the different maps when I got my Mavic Mini it was stressing me out trying to make sure I was compliant.
First I checked the Drone Assist App:
View attachment 102746
At this point I was thinking "Just return the Drone and get your money back"
Then the UAV Forcast App:
View attachment 102748
Not as bad but clearly missing the airport south of Chester.
The DJI Fly app:
View attachment 102749
This made much more sense (and included the Airport in Chester)
Ultimately it is the fly app that controls where you can fly so if that allows you to fly or not. I email Liverpool Airport to ask for guidance for the main area I was going to fly in and got a private response from one of the staff that said what basically matched what the DJI Fly app says. The only other thing is that the massive red area show in the Drone Assist app is due to Helicopter travel around the region (not including a few other things like Schools, Government Offices etc). All of this backed by the Drone code. They said this before I informed them that my drone was 249g.
What I do now is Declare the flight on Drone Assist, Check Flightradar24 for any scheduled active helicopters flights, and keep a close eye on my bird so that is I get hit by interference I know what's going on.
I have also added the full KML data set showing everything into Google Earth so that when I plan to go somewhere I can check terrain and no-fly info ahead of time to be sure.
View attachment 102750
DATASET HERE:
NATS-UK.ead-it.com
Now sure if any of that even helps; it was more me just ranting about all the crazy differnces in the map data..... but there it is all the same.
My advice, spend the money, get the Drone and find a place, it will be all good and fun (Well until November when the CAA send out the no-fun police for people)