The rental value alone would be in the region of £4K per month
If you go into the gubbins of Zoopla:
Value data/graphs
Zoopla Estimate £1,221,930
Value change: + £61,103 (5.3%)
from 1 year ago
Rental value: £4,300 pcm
Value range
£1,186,228 - £1,257,632
Rental range
£3,799 - £4,801 pcm