Air India and Jet Airways are preparing to resume their operation to the UK following opening up of the London airport. <br/> <br/>However, Kingfisher Airlines is yet to take a decision. Air India and Jet Airways officials said the airlines were prepared to begin operations as per schedule. They, however, said that their decision to resume operations could be reviewed in case of fresh influx of volcanic ash. <br/> <br/>The Indian carriers had stopped flights to Europeans destinations last Thursday.<br/> <br/>A British Airways spokesperson said Heathrow Airport in London opened for operations at 2 am IST on Wednesday and all long- haul flight of the airline out of London will be resumed.<br/> <br/>Air France and Lufthansa had on Tuesday operated flights from India to Paris and Munich. However, services to other European destinations remained suspended.<br/>