I saw the programme and saw the name of the company which was something like sadbox.co.uk, I just Googled it to be sure though and found on Martin's money saving tips, people saying that you don't need to invest in an expensive box, just buy a full spectrum or daylight bulb which are readily available in places like Tesco for less than £10 and put it in and ordinary lamp and sit as close as you can bear for approx 30 mins in the morning, best not to use after 7pm as it can leave you feeling agitated and then you won't sleep at night. There are also health issue to be taken into account, anyone with epilepsy or those with eyes which are sensitive to light. I haven't tried this, so cannot say if this info is correct, just merely passing it on.