If you're talking about the "good" Dr Martens I think you're right. Last time I checked Solovair were the ones actually making the expensive "made in UK" Martens, and their own brand were slightly less pricy.
The vast majority of the new Martens you can find are cheaply made in Asia and are not very expensive though
Same with Timberland. I have a pair that I bought in a thrift shop and it's going on strong for more than a decade. Bought a new pair and it gave up after 6 years. For this year I'm trying out some obscure maker from my country. They seem good so far, and cost less then a half of a new pair of Timberlands.
I have a pair of Doc Martens work boots that have been amazing. They're metatarsal guard steeltoe boots that I got in 2017, although the soles are cracking on them.