Why does my Non-O multi-entry visa say "Extension of Stay Not Permitted". My last Non-B visa also said this....do all visas have this stamped on them? Can I still apply for a 1 year extension at the end of this visa??

Thanks

Yes, if you have he right paperwork.

Embassies all round the world have been using these stamps for +25 years.

Yep, I concur with Astral, 'twill be no problem. My non-o from Cardief (yes that's what the stamp says) had the 'no extension of stay' stamp, totally ignored by immigration when I extended

It just alerts you that you can not obtain the normal 30 day extension of a tourist visa. It can still be extended for valid reasons.

Thanks, muchly appreciated