ME?! A professional?!
No way! I'm a non-professional family historian who has been doing family research on and off for about 40 or so years is all.
The GRO .. the General Records Office of the United Kingdom ---
England & Wales births, deaths and marriages registrations, General Register Office United Kingdom, Southport, England, HM Passport Office
It is FREE, but you do need to register, and sign in each time. https://www.gro.gov.uk/gro/content/certificates/indexes_search.asp
The search results cannot be linked to, hence the copy and paste of the info I posted for Herbert James about 6 posts up from this one.
I am also unable to afford the fees charged by ancestry and other "for pay" websites. When I was in Australia, I could visit my local and State Library and access microfilm and microfiche for free (yes, I am that old), and my State Archives where I could get print-offs of information for a small cost (supposedly the paper and ink).
I have friends who have done lookups for me on pay to view sites -- and other Wikitreers who have also done the same. All you need to do is ask for help, and someone will jump in and help.
If you check James George's profile, you'll see I added census information gleaned from FamilySearch, and cited using the FS citations for each separate one.
It's easy enough, once you get used to it. You're still finding your feet, so don't expect to be able to do it all right away.