For privacy concerned netizens, especially UK based ones, I highly recommend checking out DNSCrypt[0]. It securely tunnels all your DNS requests to an endpoint of your choice.
I've used it for about two years and it's very reliable, even on a laptop. I do recommend using it in conjunction with a caching DNS recursor such as Unbound[1] to save bandwidth.
It also works great on OpenWRT if you have that luxury.
For UK residents, please also consider changing to an ISP that cares about your online rights. I only know this one: http://aaisp.net.uk