Mmm - probably not. To get Ch's 4 and 5 via satellite you would need a S*y Box with a Freesat card

- (it picks up the other BBC and ITV channels as well, but you don't need a card for those

) - the trouble with the S*y Box is it isn't much cop at picking up other sats - no motor control, the EPG won't work, and you have to add channels through the 'other channels' menu, which usually forgets them after about ten minutes - so you would have to manually swing your dish between the satellite positions - possible, but not easy.
Other receivers are available which will happily pick up other satellites, run motorised dishes or can handle multiple dishes - but none of them (as far as I know) can pick up Ch's 4 and 5 (because they're encrypted in S*y proprietery system) - they will happily pick up all the BBC and ITV stations though - most of these have simple channel guides with 'now and next' programming, rather than a full EPG, but that's not really a great loss anyway IMHO.
Not all of the channels available on Freeview are available on satellite, or are only available with a subscription.
If it's of any interest though, I'm happily running one of the cheap Lidl receivers I have through a DiSeqc switch, picking up FTA TV from three sats, including BBC, ITV, some Spanish, German and French channels - there's no time to miss Ch 's 4 and 5 with that lot!