https://www.slab.org.uk/guidance/interpreter-attendance-at-police-stations/
This guidance is applicable to civil, criminal and children’s legal aid.
If required, we would normally expect the police to provide an interpreter to interview the client. It should not be necessary to instruct an interpreter to attend the police station on behalf of your client, except in unusual circumstances. Any such charge will require to be justified at the accounts stage.
For attendance at a police station between the hours of 10pm and 7am, we will pay for a taxi or use of a private car (payable at the prevailing mileage rate)without reference to the 60 mile threshold. No enhanced hourly rates will be paid for the interviews and travelling time will be paid at the rate of £15 per hour.