As you may have read in the papers Hornby have had a tough time in the last two years , up until last year they had a website on the well known selling platform Ebay ( this is closed now) selling their archive models, the Corgi models had certificates with low numbers of 01 / 04 / 05 /06 so there are low numbers in the marketplace now.
Can someone tell me why it is inportant to have 01 certificate ??
In the picture below is a model with 0000 is this a fake NO it is the factory sample.
So to answer you question yes the low or number 01 were sold by Hornby.