For a Russian citizen:
If I have a general purpose (6 months) visa for the UK, and am currently in the UK, does that make it easier to get a visa for France.
For example: I'm in the UK on the general purpose visa for a 3 month holiday, and I would like to visit Paris. So if I wander into the French embassy in London are they likely to give a French visa easily on the basis that I already jumped through all the hoops for the UK visa?