The Chelsea footballer reportedly swore at officers as he left Collection nightclub at 2am.
After three hours in custody, Ashley, 27, was apparently fined £80 and sent home.
'A man was arrested in Brompton Road, South Kensington, on suspicion of
being drunk and disorderly,' says a Scotland Yard spokesman.
'He was taken to a central London police station where he
was later issued with a fixed penalty notice for being drunk and
disorderly and released at 5.37am.'
Ashley's wife Cheryl Cole, 25, is currently climbing Mount Kilimanjaro with nine other celebrities in aid of the BBC's Comic Relief.
Where to next?
- 12 reasons why he could be cheating on you
- Cheryl Cole picture gallery
- Tell us what you think of the naughty footballer in chat