In reply to Jackieboy95:
On ukc the 1, 2 and 3 are the grades of the scrambles in summer.
I, II and III are the grades that a climb or scramble is in winter conditions
FRCC winter guide:
I - Straight forward snow gully around 45° or easy angled ridges.
II - Gullies with some steep snow or short ice pitch, more difficult ridges, usually summer scrambles.
III - More sustained than a II with significant ice pitches and some technical sections on buttresses.
Winter climbs usually above grade III also get a number I.e. III,4 to signify the technical difficulty, so similar to rock grades, this can show if its bold, safe etc.
Post edited at 22:43