that this would include changing to 2nd class postage for sims. Again, fair enough.
However, when asked, giffgaff (eventually) said that this would also include replacement sims
Thanks for your comments, replacement sims will also be sent out on 2nd class postage.
This is where I have a problem. I think replacement sims should continue to be sent out 1st class. If you lose your phone, it is stolen or you have a technical problem with the sim, you need that replacement sim as soon as possible
A quick search also throws up this idea, of being able to request an express delivery option on replacement sims: