I would steer clear.... I haven't flown with then but brother did and he flies a lot and said he'd never fly them with them again. Hardly any legroom, rude staff, plane was dirty, in flight food wasn't good. For such a long flight, paying even £200 pp more with emi, eti, virgin etc when they have sales or misprices is what I'd go for. Depends what you're time and happiness is worth Though some people aren't bothered such as my wife - as long as it gets from a to b she's doesn't care lol.
The planes are also terrible to fly on.
Their website is terrible to search on.
Cannot find the advertised prices to bangkok neither.
Reading online its one of the worst airlines but i haven't used them.