Caterpillers on nettles

Caterpillers on nettles

Observation - Caterpillers on nettles. Description: From my knowledge of the area I reckon these must be either Red Admiral, Small Tortoishell or Peacock. Any suggestions please.

From my knowledge of the area I reckon these must be either Red Admiral, Small Tortoishell or Peacock.
Any suggestions please.