there is never any harm in looking for a new job, only time will tell if/when you are offered it if you want to leave, or stay with your family
agree 3 under 5 is prob the most challenging, unless want twins as well lol
the grass isnt always greener
sure you are appreciated by the family, maybe you need to not go away with them?
tbh 7.50 nett isnt a bad wage for 7years exp, prob £9/10gross hours depending , or you can earn a little more then be at that wage for the next 10years if carry on nannying
im at the top end of pay, i wont generally earn much more then i do, but have been at the same wage for 4yrs now iyswim - and i have over 22years exp as a sole charge nanny including new born twins
def get a contract sorted,illegal for one, two you have no back up regards pay/hours/salary etc