David in Little Haven

We have a small cottage in the hills above Castres in the Tarn region (81). We bought an 'Etap' box & dish from a bricollage & had it installed & tuned by an 'expert'! We can only now get BBC1, BBC2, ITV1, CNN, S4C (we're from Wales!), ITV3 & we used to get Film4, all through the Astra satellite. Is this the sum total of channels we can expect to receive without installing a full 'Sky' system with associated monthly rent? - we don't use it enough to warrant this although we have Sky in the UK. Any suggestions would be most welcome - thanks