Depends on what you're looking for. If its something short term, try some dating apps like Tinder or Bumble as thats what most 19 year olds are doing or even try going to clubs to find someone.
However, if you're looking for something long term with someone, I'm gonna be really honest- that's gonna be very difficult. Women in the UK have too many choices nowadays so its hard getting their attention or even forming something long term or deep connection with them, thats modern dating for you!