You can’t just swap the process for a conjunction because if you remove it, then you have no action—and every sentence needs an action.
So to make this change you have to rewrite the nominalisations so they become clauses with their own actions.
For instance:
The change in heart, especially in London, brought about…
Could become:
People in London had a change of heart which…
Knowing that, see if you can write your own version that has more verbal groups and a conjunction. (You’ll probably find it sounds more like spoken language than written language.)