Forget not the comfrey lookalike

The mystery plant from this post is indeed NOT comfrey, nor any of the other hypothesised plants. It is, in fact, Cynoglossum amabile, also known as a Chinese Forget-Me-Not. Voilà voilà. Mystery solved. 

How did I come to find the answer, you may ask. Well, I was browsing through the Eden Seeds catalogue book (a bit of bedtime reading) when I saw some Forget-Me-Not flowers, which looked very similar to these ones I have in the garden - mine just had blue and not yellow centres.