If you compare transportation prices, the taxi ride in London costs an average of 4.65 GBP, 24% more expensive than Rome, with a fare of 3.75 GBP,
while train tickets costs 132% more in London: 2.90 GBP against 1.25 GBP in Rome.
If you compare the price of a lunch meal, however, you can find it from 20.00 GBP in London, 60% more than the 12.51 GBP in Rome.
The price of the coffee is around 190% more expensive in London, with an average of 3.74 GBP , while in Rome the coffee costs 1.29 GBP.
The main airport route flying between Rome and London is: Ciampino (CIA) to Stansted (STN). This route is covered by the following airline(s):
Ryanair.
Alternatively, you can find Rome - London flights between Fiumicino (FCO) to Stansted (STN) with the following airline(s) flying the route: Jet2.Com.
Airlines with direct flights departing from Rome to London are:
TAP Portugal, stopping in Lisbon for 65 minutes minimum.