Red Arrows Hawk on a trailer

Hello everyone,
My name is Ralph and I live in the Netherlands. I was on a 4-week trip to England this summer and came home yesterday. I must say that I find England a real aviation country. I’ve never seen so many (rare) aircraft, amazing shows etc. etc. One of the best things was a Red Arrows display above the sea, in front of the cliffs in Lyme Regis, Dorset

Now the question:
2 days ago, the 10th of august, I drove over the M25 and saw a Red Arrows Hawk fold up on a trailer, I saw the trailer on the North-West part of the M25 and they where driving to the south. Does anyone know what the Registration of this aircraft is and why it was on a trailer?
I am also interested in the registration of the Red Arrows Hawk that was at Kemble on the 7th(?) of august.

Thanks in advance,
Ralph