Expat Health Insurance
Cigna Global Health Insurance.
Medical insurance specifically designed for expats. With Cigna, you won't have to rely on foreign public health care systems, which may not meet your needs. Cigna allows you to speak to a doctor on demand, for consultations or instant advice, wherever you are in the world. They also offer full cancer care across all levels of cover, and settle the cost of treatments directly with the provider.
Moving Internationally?
International Movers. Get Quotes. Compare Prices.
Sirelo has a network of more than 500 international removal companies that can move your furniture and possessions to your new home. By filling in a form, you’ll get up to 5 quotes from recommended movers. This service is free of charge and will help you select an international moving company that suits your needs and budget.
Get your free no-obligation quotes from select removal companies now!
You could use Gumtree or Craigslist as most private landlords will advertise rentals on these sites and you can avoid paying agent's commission by dealing with a propety owner directly.
I would also advise you to take a look through out Renting a property in London page for more detailed information on the different options available to you.
Good luck with the flat hunt!