Most people will receive all the DTT channels, However, do bear in mind that it is dependent based on an area of 100 square metres around your address. There might be some homes in that area which cannot receive DTT channels because of the exact location of the property and other elements of your local geography, such as tall buildings, trees or hills. You may want to borrow a digital box or TV from a friend or neighbour to confirm whether you can get reception at your address.
If you don’t already have an aerial then you may need to contact an aerial installer to get a rooftop aerial which is the best long term solution.
In the short term, if you’re thinking of trying the service with a set top aerial please look at reviews before buying to get the best on the market.