Thanks guys! I'll re-post here what I just sent to Steve:

I will not feed any to Lily. Thank you!

I was told I needed worms you'd dig up in the garden (which do look like this); the worms used for fishing, which it mentioned on the description.

BUT, after looking at the worm store on the link you sent, it seems the dendro AND 'lobworms' are used - I thought 'lobworms' was a fishing term.

I then found this link on a fishing site, where the worms are actually imported from Canada:

http://www.willisworms.com/index.php...emart&Itemid=3

They list both types of worm seperately, so I'm deducing lobworms are a totally different worm.
I'm sure the worms in our garden look like the ones I got, and also fatter - but without that little smooth section. I will investigate more when the weather warms up!

There's an angling shop just down the road, which I never get around to visiting, so I'll check which types they stock and where from.

British worm classification just doesn't cut it!
I guess other reptiles have different tolerances to these worms.