I originally added this post to the 'sticky' at the top of this forum, but then realised that was a closed thread and perhaps some of you would like to comment.

Courtesy of a county mailing list.

From 1 April 2023, it will be free when you apply for service records from the MoD.
It's in black-and-white if you scroll far enough down the page. (Fees.)

Note that in certain circumstances you will still have to provide a copy of a death certificate so there may be that to pay for.

I don't know if there is still a backlog of applications caused by the service being closed down during lockdown. If there isn't, there will be by 3 April.