Butterfly I work full time (back to work when DS1 was 12 weeks) and when DS2 was 9 months, but not full time for a while after that).
Both boys self-weaned off the breast - DS1 at 3 1/2 and DS2 at 4 1/2
I was fortunate that they both went to an on-site nursery so could BF them when they called me (when they were tiny) and then at lunch time when they got a bit bigger.
Barely anyone knew I was still nursing DS2. The only reason I didn't want him to start full time school and still be BF is because I didn't want to risk him being misunderstood or teased. I was always more than happy to talk to people about natural weaning but after over 7 years of it I couldn't be bothered with the ignorance and only shared with kindred spirits or those with open minds. DS's never questioned it - for a very long time it was just a quick feed in the morning, then every other day, then longer gaps etc until "oh, that must be it".