Bending to the right makes no difference, but bending to the left makes the pain worse.

Some further information, in case that helps you work out what is happening - I have no problem bending forwards, in fact since I've been doing my hamstring stretches, I can now touch the ground without difficulty although I do sometimes get pain when I straighten up again.

My movement leaning backwards is more restricted, and does cause me pain (across my lower back, but worse on the right side)

Thanks for your continued interest