Why a online business
With an online business the limitation which businesses build out of bricks and mortar stuffer do not really apply, you're not limited to space or opening hours. Your business will be open 24 hours.
Rent, staff costs, stock costs are either reduced or do not exist! If your able to run your online business without all the unnecessary expenses that traditional bricks and mortar have your costs will be lower and most importantly your profits higher!
There are millions of people in the UK online, billions world wide - all of which could be customers.
Its also something which almost anyone can do, single parents, mums at home or someone who is retired...