They are trying to finish all the applications filed under old policy, where applications takes 2 to 3 years,Little observation,
LVO is running slower this year than 2016.
in 2016 they had touched even July applicant for DM, while this year in 2017 still stuck on May-17 applicants.
From 2017 they are following new policy of 12 months for an application.
London is slower because of the number of countries on it, plus the cases of Pakistan, India, philippines and all other are complicated sometime and all of them are considered as Potential fake marriages. which they caught many times. thats why their screening is tough.