You will need to go in person to the visa centre in London to get fingerprinted for a first Russian visa. PITA. If you use Real Russia for visa services at least you don't have to go back to actually collect your passport and they don't charge all that much. I used them for a lengthy rail journey (Poitiers to Mandalay) and they sorted out all the visas that had to be done in advance then couriered my passport back to me. It was cheaper than multiple trips to London.