If you did, then (if you were already getting good digital reception) the problem might be related to too strong a signal (especially if you're close to a transmitter). Remove any signal amplifiers you might have. Then try an attenuator:
http://www.maplin.co.uk/aerial-attenuators-965
The digital switchover is a national thing, been going on for ages, and all without hassles. The only hassle is for the viewer to make sure they have the right equipment and means to recieve. So, considering millions are affected by this, you want to complain about it just because you can't recieve? It's not rocket science to know that the reason you are having problems is probably down to you in some way, not anyone else, and not because of the switchover.
This cannot be real.
In case it, do you have a freeview receiver either built in to the tv or in the form of a digibox?
If so, is your aerial adequate?
Just to add to my previous post:
Digital transmitters were operating on reduced power prior to the changeover, in order to avoid interference to the analogue service. The switchover means that the digital transmitters are now using full power. Problems with the tuner circuits of TV sets being 'swamped' by high power signals are far from uncommon and, given that nothing else has really changed (unless, for example, your aerial has been knocked out of alignment by strong winds) that would seem to be by far the most likely cause of your problem.
Anyone else would have actually said how they were tring to get it, equipment etc. You came across there like disgusted of Tunbridge Wells, and it did make me laugh.
Our area has been switched over to digital using the Stockland Hill transmitter, unfortunately we can't receive any channels ! If we go onto the website and use there post code checker it says that "Unfortunately, it is unlikely that you will be able to receive the Freeview channels"
So at the moment we rely on our tv signal to come through a cable via virginmedia, We have one tv with built in freeview and two set top boxes both unable to use! ah well I was never one to watch tv in bed!
My previous posts assumed that you were ALREADY getting good digital reception. If you've NEVER had good reception then the signal almost certainly needs boosting, rather than attenuating. A simple signal booster (£9 in Asda) may well fix such a problem. (If not, you'll need to get a new aerial).