Shez55
Lots of good advice here. Do NOT plant any sycamore or Eucolyptus trees! I have removed thousands of self-set tiny sycamore seedlings in the last 30+ years. Seeds will grow anywhere and everywhere, even in the smallest crack in a wall or path, and soon become a major problem. The trees are far too big for any normal modern garden and the roots are as wide as the tree and can ruin house foundations etc over time. My son has a eucalyptus tree (very cheap to buy) planted by the builder, which grows very fast and is also far too tall for a small modern garden. A friend had to remove his when the Eucolytus roots destroyed his drains - very expensive! Be warned. A small pretty tree may grow to over 100 feet tall and become a major problem! Eg Cupressus × leylandii are definitely to be avoided. Often planted as cheap, fast growing hedges, they can grow to be much taller than your house, and so wide they kill any plant life growing near-by as they suck all the moisture from the soil.
Definitely research any bush or tree BEFORE buying to avoid problems later.