Sad to say, but I missed both the pre-sale and the open sale for Depeche Mode concerts in London, and now there're only seated options left. Could you please tell, is it still possible to get one standing ticket anywhere without overpaying a lot?

I'm not local and will be getting to London at the end of May for Mark Knopfler concert and while Pulp still have't announced anything about their 2013 plans, seeing Depeche Mode would be good, so any help is really appeciated :)

There are tickets at seatwave and viagogo, which one is safer to buy at?