Anybody think those pictures are actually that good? I mean they look OK but if that's what Boots think is the general standard of professional portrait photography then we're all in trouble.
As Eileen says, being a pro does not always involve producing top notch work. I've seen much better from people on this site alone who are committed hobbyists.
Jonathan would probably assign them a reject flag in Lightroom
I did note the absence of the simplest way of proving who took the pictures - take the camera down.
The exif data on a Canon camera includes the serial number of the camera taking the picture and if configured correctly the authors details - even Boots can't argue with that!
But my final point would be this - if Boots do not expect to be printing 'professional quality' pictures, what does it say about the quality of pictures from their intended market?