Police cordoned off part of the road near the Circle roundabout in Carshalton after a fight broke out at 3.30pm on Friday, January 17.
Four women aged between 18 and 21 were arrested on suspicion of assault and public order offences.
They were taken to Sutton Police Station and were each issued with a fixed penalty notice of £80.
There were no reports of any significant injuries.
- Police search for missing Sutton man
- Rail fare hike arrives on time unlike many trains
- Richmond by-election reaction: Brake no longer Olney Lib Dem in the city
- Southern rail passengers compensated four weeks' travel over operator's 'poor performance'
- Advice to 'drink plenty of water' when you’re unwell could actually be bad for you, doctors warn