My rent

I thought I'd work out what proportion of my salary I spend on rent in London and travelling to work. 

Flat 1 March to September 2010
5 bedroom flat, 2 bathrooms but no living room
Private landlord
Zone 2
£670 a month rent including bills (50 % of my salary at that time)
£256 a month train ticket (19 % of salary)

Flat 2 September 2010 to September 2011
3 bedroom flat including a living room and a yard
Sublet from colleagues
Zone 2
£650 a month rent and £70 bills (54 % and then 52 % of salary)
£269 a month train ticket (20 then 19% salary)

Flat 3 September 2011 to March 2012
3 bedroom flat including a living room and a balcony
Sublet from friend of the owner of the flat
Zone 1
£700 a month rent including bills 
£283 a month train ticket

Flat 4 March 2012 to current
4 bedroom flat including living room and a balcony
Private landlord
Zone 2
£510 a month plus about £60 bills (38% of salary)
£298 a month train ticket (19 % of salary)