I know it's not something you'd want to hear but building yourself as a proper LinkedIn authority?
I'm from the UK as well and have connected with various people like you (my agency works with SaaS companies and I write for this audience) — either by reaching out or by attracting them through my writing.
It's more of a long shot as well but maybe consider writing/building something that's relevant for VCs — I'm aware this second answer I'm proposing is pretty much telling you "become richer by not being poorer" but time and time again it has been proven to me that it's the topmost option for building connections
I'm from the UK as well and have connected with various people like you (my agency works with SaaS companies and I write for this audience) — either by reaching out or by attracting them through my writing.
It's more of a long shot as well but maybe consider writing/building something that's relevant for VCs — I'm aware this second answer I'm proposing is pretty much telling you "become richer by not being poorer" but time and time again it has been proven to me that it's the topmost option for building connections