Probably because I am so confused / an idiot. I got the impression reading the Tesco API that data was returned as JSON and I don't know the difference between Hashref and JSON.

Extract from the API - A simpler HTTP-based interface using elements of the Representation State Transfer (REST) methodology. This interface uses commands and parameters embedded in HTTP URL requests, known as query-strings. The interface responds with data in a format called JavaScript Object Notation (JSON).

However, I guess perhaps the Webservice::Tesco::API module is taking care of all that and converting it to a Perl Hashref. I was trying to learn to do things the right way rather than what I mistakenly thought might be the wrong way.

Just remains to say thank you, to you and the others that have taken the time to help me and point me in the right direction. I have learnt something along the way.

Best wishes - James. (I'm sure I'll be back with my next issue).