Trident and the submarines would be my first choice of cuts.
Next would be no welfare without a 40hr work/week (even if it's 'make work').
Leave NATO and the UN, stop all foreign aid, etc.
100% tax rate for those earning over 100kpounds/year.
Redistribution of all large landholdings to the people (Royals/Church/Forestry/RSPB/Military/etc)