Bianca, looking for a babysitter in Nunthorpe

We have relocated from South-Africa to the UK and my husband and I would like to have a "date night" every now and then to just go out for dinner or a show.
We have a 15month old baby whom I'd like to have a nanny/baby sitter for, for a few hours.

We also have two teenage sons, 13 & 14, who are wonderful with their little brother however they are too young to look after their brother alone thus we would need an older minder. They will be doing their own thing - play playstation, be on their phones/computer etc. So we won't need a sitter for them, just baby but they will help the baby sitter if baby gets difficult etc.