All receipts for any costs, such as train, bus or flight tickets, hotel bills, receipts for conference fees, etc. are to be kept in full and the originals forwarded to the Travel Management division.
Costs without receipts cannot be reimbursed. If you should lose a receipt (such as a bus ticket), you can produce an internal receipt instead. Please note on this that the original was not and will not be submitted for reimbursement somewhere else.