aerogrammes

peace

I've found several of these at home when trying to clear out old stamps, and wondering what to do with them. The royal mail person couldn't tell me when I rang up, other than that they don't do them anymore. 
I don't need to write to anyone abroad, but can I just use them as letters to uk addresses? May keep one for memory's sake, but I guess they won't be worth much, so just want to use them really. 

NBLondon

A quick check on some stamp collecting forums says they are still valid for a worldwide letter as long as there is no extra sheet included.   In theory they would be delivered in the UK but it does run a small risk of being surcharged because someone at RM doesn't recognise it.

Or you could try selling them on eBay.... 

GrubbyGirl_2

I would be tempted to send them back to swap for bar coded stamps.  They are the equivalent of a stamp.  If you're not going to use them you have nothing to lose.  I only had a few stamps - 8 second class and 4 first class and they sent me 12 first class back