I've never seen restrictions on entry gates at Waterloo in the evening peak. True that they don't seem to reconfigure them from earlier in the day, but there always a way through, even without sneaking round the back between platform pairs. Waterloo is a busy station, and evening peak very much doesn't mean that it reverts to outward travel only at that time.
For people with any sort of luggage beyond a small rucksack the best way is via the wide gates. A badly positioned bag can easily get trapped as the normal gates close behind the person. A big rucksack on a small person can cause chaos!
For people with any sort of luggage beyond a small rucksack the best way is via the wide gates. A badly positioned bag can easily get trapped as the normal gates close behind the person. A big rucksack on a small person can cause chaos!