Have they changed their process then? I had FTTC installed over a year ago now and the OR engineer brought a Homehub with him and said it was standard practice.
(I didn't need the Homehub as I'd got FTTC through a reseller but that's why I assumed the OR engineers still bring the Homehub with them)
Well I don't have BT Infinity, but my neighbour got it installed and I had to take delivery of their Homehub when they weren't in.
Said on the top right/left corner of the box "Engineer Install" or something like that.