Before Revolut introduced the new personal IBAN, they used a generic IBAN: Every customer transferred money to that same account, and a “reference code” was used to allocate the money to a customer’s card. This bank account still works and could be used for top ups. Put in the reference code as the only text for the transfer.
I would recommend to try it out with a small amount before sending all your vacation money on the way.
The important reference no. can be deprived from your personal IBAN: it is the last 8 digits of your personal EUR IBAN.
See here for the other informations:
Beneficiary: Revolut LTD
IBAN: GB98 LOYD 3080 1286 5682 90
BIC: LOYDGB2LXXX