Join Date: Aug 2011
Location: Barcelona, London, on a plane
Programs: IB+ Gold, TK E+, Hyatt Globalist, Marriott LTP, IHG Diamond
Posts: 14,182
T4 doesn't really have convenient public bus options since it's on the far side of the airport.
But you can easily see your options with Google Maps and/or a visit to the Transport for London website if you don't want the Hotel Hoppa.