Been lurking for a while...but thought I could add here.
I'm 46 & live in Wales. I started to think I had ADD, then did some of the online tests & got advised to have an assessment.
Took a while to go to the GP, expecting it to go badly (after reading lots of horror stories), took a filled in DIVA test with me & she was really nice.
Had the choice of NHS or private, main difference being time. Decided to go private as know how hard pressed MH services are due to a sibling having bipolar.
Went along (appt close to home, was expecting to travel) expecting to be told I'm wasting his time. He took a history, talked to my OH & looked at the info I took with me & diagnosed me.
Just had the report. Not going to be medicated but knowing it's neurobiology, not MH illness is a relief. Lots of things make sense now. (-:
Read lots of books, including Delivered from Distraction, Sari Solden's book for women & All dogs have ADHD, which I loved. There's a good adult ADHD Facebook group.
The Diva assessment can be found online, it's a diagnostic rating scale but doing it helped my husband understand & then support me.
I also went to a group session in the nearest big city prior to diagnosis, to see how it affected other people. Lots of the people there had other issues, which is very common but I just have ADHD. Happy to discuss. Not found a suitable local group yet. Still in shock I got the diagnosis with little fuss.