I don't know if this is the place to revise my Firefox findings.
I must inform that Firefox also exhibits the same fault as Google browser for a specific email related to two Amazon transactions. The Amazon transactions have a standard arrangement with Order Confirmation, Despatch, Arriving today and finally the 'Your package has been delivered'. This is the standard for all Amazon transactions. Oddly the Firefox 'Your package has been delivered' email exhibits the print problem as for the Google browser, and is repeated for both of my Amazon Transactions. Since this Virgin Media print problem does not appear to be entirely related solely to Google browser but also related to specific emails when using the Firefox browser I think Virgin Media should take some time to find out what is going on and hopefully resolve this nuisance.
It would be interesting to know if this Firefox problem is repeatable, try a few amazon transactions perhaps and see what happens. Firefox seems to work ok for other emails that I have had recently.
I'm sorry to raise this problem again.
Hope you can assist. Bejay2