Looking for 2 tix for the sept 1 concert

I’m looking for 2 tickets for Ariana Grande’s September 1st show at The O2 in London. We’d prefer seated tickets, but standing would also be absolutely fine.

Also, if you have any advice on the safest way to get tickets this close to the concert, I’d really appreciate it. Which resale platforms are actually reliable, and where am I most likely to receive valid tickets without getting scammed?

Thanks so much!🫶🏻