Driven to Despair - Report on DVLA medical section

I’ve had the letter through today saying I have to go to Specsavers for their affiliated opticians to do more tests on me. I have to go within 4?week of when the letter was dated in this case the 6th of February and if I miss my appointment then my license will be revoked.
I’ve got myself booked in for a week on Saturday. Thing I don’t understand is the last time I had to go to a DVLA affiliated opticians it was to my local hospital, why is it now I have to go to Specsavers? Are they in cahoots with the DVLA making a nice little earner whilst signing off perfectly fit drivers as unfit to drive and ruining their livelihoods at the same time? :unamused: