I would first pay off my dad’s debt/mortgage & buy a new car... next I would buy a new house on the outskirts of London/ a neighbouring county (more value for your money)... then invest in rental properties up north(and other business ventures... afterwards I would complete the houses in Uganda for rental & put money aside for uni ... then give all close relatives some money (depending on what I won) & take them on holiday to Disneyworld Florida & Uganda (where I’m from) and organise an annual holiday to the uk for my family in Uganda as the visa application would be accepted