Eurobird 1 can be received with 2.3 dish or maybe smaller
If you use a freesat box to receive this channel i believe the epg is on Astra 2d so you need your big dish to get this.Although you can view this channel with other receivers such as Technomate 6900 without epg
You have to remember that quite a few of the Freesat channels are broadcasting of Astra 2D (including the Freesat version of C4) so whilst the epg may be available you may well find many of the channels arent! You still need those monster dishes for Freesat if you want the full channel line up
ITV HD is at present only available on Freesat boxes via the red button. It is almost certainly the same as BBCi, which needs to be receiving a BBC channel on Astra 2D to access the menu, even though the interactive stream is on 2A south and easy to receive.
At present the only receiver that can directly access the ITV HD stream on Eurobird is the FortecStar Passion HD.