no, its my brain on just numbers. french and british together have two operational ssbns. thats basically their only real nuclear capability.  british sub has 48 warheads. french is probably similar (just cause on paper their slbms can carry more doesnt mean they are, that impacts range and ability to put penetration aids on them).  french and british thus maybe have 100-150 warheads. not really enough to erase russia, meanwhile russians can erase them with a fraction of their nuclear arsenal.  its absolutely not a contest. one country would get horifically damaged, but theyd recover. france and uk would virtually cease existing, and with them europe too.
Montenegro