Some pay full year 's rent , deposit and fees up-front to land properties . On average , desperate buyers in London handing over £200,000 to landlord . Comment: Frenzy being caused by super-rich Russians and fears of mansion tax .
Some pay full year 's rent , deposit and fees up-front to land properties . On average , desperate buyers in London handing over £200,000 to landlord . Figures also say average prime London home costs £3,500 a week to rent . Frenzy being caused by super-rich Russians and fears of mansion tax .