Bluegrass Solid knees size medium as per these:

https://www.chainreactioncycles.com/bluegrass-solid-d30-knee-guards/rp-prod168578

And Bluegrass Solid Elbows as per these in Large:

https://www.chainreactioncycles.com/bluegrass-solid-d30-elbow-guards/rp-prod168581

£80 for both pairs or £45 each for knees / elbows respectively, prices are posted.    Its all been worn once during some skills coaching and is in great condition not crashed or torn.