Speak to the council or better still ask you're neighbours to chop them down to a reasonable height, offer to go halves with them on costs if gets you you're light back.
I used to cut the conifers back for my Mum with shears, as soon as I left home a visit to Argos supplied an electric hedge trimmer to replace the shears and the beep using them.
If you don't like you're neighbours leave them alone.