20p

Camera?
...check

Card reader?
...check

Work security pass?
....check

Mobile phone?
...check

Bus fare?
...check

Spare 20p in 2's in case fare has gone up?
...check

Purse on coffee table instead of in my bag at work with me?
...check

AAAAAAAARRRRRRRRRRRRRGGGGGGGGGGGHHHHHHHHHHHHH!!!!!!!!!!!!!