https://www.bbc.com/news/uk-scotland-no ... d-50233941
An RAF crew will soon begin training in the use of the aircraft at Naval Air Station Jacksonville in Florida before it is flown to Lossiemouth next year.
The second frame will follow in two to three months while the 3rd and 4th frames will not be delivered for a while yet. The first two frames were shifted to earlier production slot through negotiation with the USN. That explains the large gap between the 2nd and 3rd frames.