I've emailed them.
Dear Sir,
I visited your store yesterday in order to purchase some last minute dinner items, and some loo roll.
I was pleasantly surprised to discover that your own brand loo roll is about 75% cheaper than the posh stuff. Fabulous.
However, your packaging distresses me.
In a large obtrusive font at the top you declare 'same luxury less lorries', which is such a painful grammatical howler that I nearly wept. Dear Tesco, please amend this for me. I accept that 'fewer' doesn't alliterate as well, but these things matter. Spelling and grammar may seem unimportant to some, but they are the very foundation of society and we will all go to hell in a handbasket if we lose our way.
I'm sure you can understand my discombobulation. I beseech and implore you to do something about this or I will be tempted to get my red marker pen out and do it myself.
For future reference (and it really is very simple), things you can count, like lorries, elephants and forks, are FEWER. Mass nouns such as water, lager, rice and snow are LESS. Less lorries is wrong, and makes you look a mite foolish.
Warm regards,
Reality