British Embassy Visa Application Centre in St. Petersburg The Visa Center continues to operate as usual. The expulsion of 23 British diplomats from Russia and the closure of the British Consulate General in St. Petersburg have not affected the activities of the Visa Center.
According to the website of the UK Visa Application Centre in St. Petersburg, the centre's staff will accept and issue documents as usual. There are no restrictions on visa processing for Russian citizens.
The closure of the Consulate General will not affect the visa issuance process; however, the speed of visa decision-making may be slower. Therefore, the Visa Application Centre recommends beginning your UK visa application process well in advance—at least six weeks before your planned trip.
Source: travel.ru