C2 salary in UK

Recently my friend went to UK onsite,he stated that his total expenses in a month is about 1-5-2laks,-1lack is room rent with all charges including and above 50k-1lack is daily needs,food and all of them.. On paper,they mention around 4.5-5 lacks itsims,but you don’t get those all,mostly you will be getting 3.5-4…