Your research skills are to be admired Rabia Bilal but you have to be catious over the conclusion you draw from them.
To address your original question "Is liligo.co.uk website reliable ?" the answer probably has to be "No" from your research and my own, but I doubt that it's due directly to any intent to mislead on their part. Perhaps all sites offering the cheapest deals and comparisons are open to being 'fed' incorrect/inaccurate/false information and the question you have to answer for yourself is how reliable is the information you're being given. So you can't just go ahead and book a flight purely on the suggestions made by that sort of site. You have to do the kind of research you've been doing, and that being the case, you have to wonder what function these sites are actually performing. It seems slightly daft if they are providing details of flights that may not be available at the quoted prices.
I checked the two domains you mentioned mentioned for hoodaki.com and it seems that they are both owned by the same company - Benz Travel Ltd.
I found an interesting article here which refers directly to Benz Travel Ltd
http://www.insidetraveller.co.uk/archiv ... s0208.html... and it also goes some way to explain why so many companies exist under different names and why you see bargain flight details advertised that turn out not to exist. It seems to be like the situation where holidays advertised in travel agent shop windows turn out not to exist when you walk inside and enquire.
The principle appears to be, to be cautious who you book your flight with. Even some people with valid air tickets have found that they have not been accepted by the airline at the airport because it has been claimed that the retailer hasn't completed the formalities properly.
When you go looking for cheaper prices by using travel companies that don't have the same reputation and protection as the major names you take a risk. They're not scammers, but you have to be very careful all the same.
