Hello AMCP! ;-)

Ok, I'll try my best to give my opinion. :lol: I've used those 2nd Class UK stamps before, and this is what happend:
I wrote to Cristiano Ronaldo with a small [b]4x6[/b] sized SASE with [b]one[/b] 2nd Class UK stamp and I got it back with no problems. {up}

I also wrote to Daniel Craig and Sir Ian McKellen with [b]8x6[/b] sized SASE's with also [b]one[/b] 2nd Class UK stamp. I got Sir Ian's autograph back in my SASE, but he added a 68p stamp. :?
I also got Daniel's autograph back, but he used my SASE and didn't add any extra postage. It seems it was delayed because of that as I got a sticker on the back of the envelope saying so... :neutral:

So, my opinion is that you should at least put 3 2nd Class UK stamps on an 8x10 envelope (sorry, I'm South Africa, we don't work with ouces here so I hope it's ok if rather I talk inches! :lol: ).

Good luck and if you have any more questions, please feel free to ask! :mrgreen:

Regards,
Lizanne

Can someone please answer this for me?

Bump.

oops, meant to edit my original.

How many of these -

http://www.royalmail.com/portal/rm/shop?catId=9300091&pageType=Others&pageId=shp_prddetails&product=prod46530101&parentCategoryId=cat45940009&categoryId=cat45940035

Do I put on a 2 ounce envelope? It'll be put on my SASE from the UK to the USA.