Group Rooms Guarantee Payment For 10 rooms or more Details Credit Card Statement Address? Please use the address you have registered with your card issuer. Contact PLEASE TICK WHERE APPROPRIATE I would like to have copy of the invoice sent to the email address provided above GROUP INFORMATION Please pre-authorise my card now with the following amount as guarantee for the above booking: GBP. (Maximum allowed amount £10,000.00) I hereby authorise Royal Lancaster London Hotel to charge my credit card for the group outlined above for contracted charges within 10 days after departure. I have understood and agree to the Terms & Conditions and The Hotel Policy Please note: The authorisation amount entered above will effectively reduce your available credit card limit for 30 days and is automatically released after this period.