If we're talking Afghanistan then:
ISAF patch on right shoulder:
Small Union Jack patch and 19th Light Brigade "Bagheera" flash on the left shoulder:
The sandy coloured variant on the right appears in some photos, usually when wearing desert camo.
And you
sometimes see the Royal Regiment of Scotland patch on the chest, on the body armour, either in full colour or camo; and a camo version sometimes (but not always) on the right arm above the ISAF patch:
I've seen a few shots with a hackle patch on the left side of the helmet, but it doesn't seem to have been universal:
I've got a feeling that one is a "morale patch" rather than official insignia.
These shots give an idea of the size and location:
I may have missed some things, but those are the ones that are noticeable in photos.