From Mum's *falling apart* Edmonds Cookbook - 1976 edition, 15th printing deluxe edition (worth keeping just incase it varies slightly in new editions!).
1 1/2 lb sugar
1/2 cup milk
1/2 tin of sweetened condensed milk
4 oz butter
1/4 tsp salt
1 tblsp golden syrup
Put sugar and milk into pan and bring to the boil. Add condensed milk, butter salt, and golden syrup. Boil 1/2 an hour stirring frequently. (Note: tends to stick to bottom if heavy based pan is not used.) Beat until thick, about 5 mins. Pour into greased tins, mark and cut when set. Vanilla and nuts may be added if desired.