Question is silly -
Most places generally okay in the daytime, just use common sense, if you come across as jumpy/nervous/lost, all it takes is one dodgy fella to spot you and you become a victim, rest of it is down to luck. Wherever you go, walk around like you own the place or lived there all you like, study maps so you got your bearings when you park up.
These places will generally be okay to punt in the daytime, keep an eye out for suspicious behaviour, if your gut tells you something go with it, better to pussy out than to be unsure. Unless you can handle yourself you don't want to be taking too many risks.
For me the biggest fear of punting is being scammed/rob by the Prossie and/or their pimp, generally this type of scum will operate in an area renown for cheap rented properties or council owned places, but it isn't to say the whole area is full of scum and that a classy flat/hotel is a sign they are genuine, always keep your wits about you in the meet. Don't bring your wallet to the punt, park somewhere secure/5 minutes down the road from the area, only take cash, cheap burner and keys - No jewellery unless it's something you don't mind losing - If you do bring your wallet with you, keep it in the car hidden from view.
Otherwise you're unlikely to be mugged/murdered/raped/offered drugs or whatever unless you are unlucky. A lot of paranoia is made from reading too much into media reports and websites talking about how they knew someone who got raped by 5 Nigerians, lot of it could be absolute bollocks. I would say just avoid night punting at estates, punt soho/hotels/parlours at this time, or with people you know or an affluent area.
I punted some absolute shithole areas (not in London) - Generally no issues because I punt during the daytime, they might be shitholes but parents still take their kids to school, older people still walk about, unless you read The Sun and think every run down estate is full of foreigners or pikey chavs who are waiting to mug you, then there isn't any issues. If I get a postcode and it's a shithole area, first of all I wouldn't go are night unless it's a well reviewed girl here or someone I seen before plenty of times. Secondly, if it's daytime I would make a few judgements based on their personality, speak to them on the phone etc, not because I fear getting mugged but because they might turn out to have poor service/skanks or just generally lying through their teeth for their next crack fix.
Remember - Common sense. And know your boundaries, if you're paranoid about "bad areas" and have been consuming your daily dose of ITV and The Sun, believing everything you read on ilivehere.co.uk then you shouldn't punt anywhere except in Hotels and with well reviewed girls because frankly I doubt you have the mental capacity to hold yourself in a punt in Peckham. You'll spend most of it a bag of nerves looking over your shoulder.
