advice on moving to a highly populated city for a new job

Hello All,

I am at a crossroads in my life as I have had a chance of moving to a new job with a healthy bump in my salary (nearly double if what I am currently on). I would really like to go for this opening but the job is located in central london and I have many concerns with regards to coping with the amount of people around me at all times and the living situation there.

I really don't like living with other people as I really like my own space but the cost to rent a one bedroom flat is insanely expensive (like £1300 per month) but in contrast the rent for sharing a house with 2-3 other people greatly varies but tends to be around £550-850 per month depening on condition and area. has anyone ever had experience house sharing with aspergers at all? what was your experience like? 

also, what kind of experience has anyone had when moving to a big city solo? every time I think of a scenario that may or may not happen I keep convincing myself not to go. 

also, does anyone have any experience moving to another company outside of your immediate county into a high position role solo? I know nearly all of my colleagues at my current job so i feel relatively comfortable around them now, just the thought of moving to somewhere else and needing to familiarise myself with new people all over again seems really daunting!!

all of these uncertanties are really putting me off...

some other information, im 29 male, live on my own and has aspergers syndrome (recently doagnosed)