The move was also aimed at forcing Russians to pay more taxes at home, as the country's budget was hit by sanctions and low oil prices, a cornerstone of the country's revenues.
For hundreds of other Dutch UBS account holders who did not lodge similar appeals, however, their information was already transferred to the Netherlands from Switzerland.
From second homes to priceless pieces of art, investments to family heirlooms, HMRC can take a hefty slice of the gain on the sale of certain assets.
The smartphone app, which has raised more than $7bn (£4.8bn) in funding, and is valued at $62bn, is currently losing money as it ploughs cash into expansion.
Andy Golding, chief executive of buy-to-let lender OneSavings Bank, is more sceptical about help for challengers.
Experts report that the increase in tax payable on second transactions could make investors from the Gulf more nervous, particularly as the UK already hiked the level of SDLT imposed on residential property worth more than £1.5 million ($2.1 million
David Smith, Director of Financial Planning at Tilney Bestinvest, comments on the impact of the Budget for the Buy-to-Let market: