Forget the headline. This is jot a same day service, or a next day service. They will book you in for a day and then cancel and offer you a slot on the next day. You'll probably accept that, miss going to work, and wait while they give you an 8 hour window. You will call them after 6 hours so that they can reassure you the job is going ahead. Then you will wait until half an hour before the cut off time, when you will receive a call from them to say that they can't make it after all, but they will offer you another 8 hour window the day after tomorrow, which would be 4 days, not same day, and expect you to be grateful as if you are not paying £200 for them to mess you around.