Hi Leon,
You might want to take a look at this unit.
Will remove those scratches, clean & polish the discs.
Not too expensive but much better than doing it by hand.
Just be sure to check that spare polishing pads & the cleaning liquids are
available.
(The site says it does have the necessary spares available.)
> Procare CD CD-R CD-RW DVD CDROM Disc Repair Machine fix scratched CD's DVD's
>
https://tinyurl.com/4zxt76hv
(I always use the tiny url site coz the eBay link/s is/are very long.)
Hope this suits.
Just remember, when drying the disc to wipe from one side to the other....NOT round 'n' round
& use a microfibre cloth.
This video may interest you as well...
>
https://www.youtube.com/watch?v=A5IhX_d1vlw
"They" are professional eBay sellers in England.
This is the JFJ Unit he uses...
>
https://www.jfjeasypro.com/shopnew/
It's a tad more $$$'s but most probably, a better unit.
Stay safe..