Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
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This doesn't look like the Tripe Fungus I have seen (that's not to say it isn't), could it be frozen Leafy Brain (Tremella foliacea)?
Certificate in Contemporary Science (Open)
I at first thought they were hairs but as you say it could be frosted,will have a closer look would help if photos were slightly clearer.
Lat/Lng: 51.24436, -0.15556
OS grid ref: TQ288510