why dont u get multiple entry visa so that u can have luxury to come out on ur return journey aswell.I'm also flying out on 3rd of october to Nepal for Dashain/Tihar will be back on 1st Nov.If  ur travelling date is before 3rd Oct I'm happy to pick u and drop u Airport and u can hav rest on my place as I live 20 minute away frm Heathrow.Just drop your itenary thru sajha.