These are packs of Logos for Freeview and Freesat and have been updated as of the 02nd September 2014.
They are available for download on the Wiki.
I have included most of the religious, ethnic, etc. channels and BBC Red Button logos. There is a Plain Brown Envelope generic Adult logo
There is a list of the channels in the TV & Radio archives.
They are in 16:9 format 256x144 for TV and 350x196 for Radio, highly optimized png format.
If required for a particular application I could batch any size up to 1000 x 562
There is also a Separate Pack of Local TV Channels available, it contains all 19 Stage 1 Local Channels.
If there are any channels missing that I have not noticed or any you would like me to add (non Freesat free to air?) just list them in this thread and I may oblige.