Will your Visa be ready on time? Where will you come from to London?
Yeah in Russia if you apply waiting for 15 business days (means 3 weeks) then you should pay $130 USD application fee only. But this is if you have time and if you are applying at embassy. All the UK embassies were closed here because of our mister President intentions so we have to apply using visa centeres and they sent our passports to UK right away. So there was fun "services" we've payed for. 130x2 for two visasa, then 75x2 for two "Prime time applications" meaning you are coming in the evening (there were no room left in the morning they said but was looking so surreal all the visa center was actually empty when we came) + we've payed $260x2 for priority applications so they would try to finish everything in just 5 business days but no guarantees there + we've payed additionally $80 just to walk in that center :) haha! We were just laughing there because we had no choice actually.
But I am sure it will be worth it and we will do our best on the Show plus I've never been to London and it's really interesting to visit that place and meet all of you, guys.