Just that really - I know we can get 4.5x, I also know that back in the day the advice was not to borrow more than 2.5x or something along those lines - but the reality is that now (on our decent but not astronomical incomes) it's not possible to buy a place in London (which is my hometown - so not keen on leaving) if we only borrow 2.5x.
With interest rates as they are now we've calculated that we could manage monthly payments for a 4.2x mortgage (with a 15% deposit), but I'm aware that interest rates will go up at some point. In terms of outgoings, we've got to get through the next two years and then free nursery hours kicks in, which will make a big difference as DD is in nursery full-time.
I guess I'm just interested to know what people have gone for? DP and I are both naturally quite risk averse, but with a 4.2x mortgage we have the opportunity to buy a house, instead of a flat, which we would love to do (and will help us to avoid some of the risks associated with owning a leasehold property - so there's that).
If you bought in London many moons ago by borrowing 1.5x your salary then I am thrilled for you but please don't tell me that! 