Look up per diem reimbursement rates and mileage deductions for business travel worldwide.

Complete

United Kingdom → Qatar

Item Name	Destination	Amount	Conditions
Meals	Doha, Qatar	227 QAR per day	Over 5 hours rate: covers subsistence expenses for a period of more than 5 but less than 10 hours, measured by reference to the times of arrival in and departure from the foreign country.
Meals	Doha, Qatar	524.5 QAR per day	Over 10 hours rate: covers subsistence expenses for a period of more than 10 but less than 24 hours, measured by reference to the times of arrival in and departure from the foreign country.
Meals and incidentals	Doha, Qatar	617.5 QAR per day	24 hour rate: covers the total cost of meals and daily hotel-to-office travel for a full 24-hour period.; The actual room rate is paid in addition to this amount (source shows the rate as 'plus room rate').
Lodging	Doha, Qatar	711 QAR per night	No specific conditions
Breakfast	Doha, Qatar	45.5 QAR per meal	No specific conditions
Lunch	Doha, Qatar	197 QAR per meal	No specific conditions
Dinner	Doha, Qatar	268 QAR per meal	No specific conditions
Incidentals	Doha, Qatar	15.5 QAR per day	Source row labelled 'Other': other expenses incurred during the day; employers may use the individual meal and other rates instead of the over 5 hour, over 10 hour and 24 hour rates.
Drinks	Doha, Qatar	59.5 QAR per day	No specific conditions
Transport	Doha, Qatar	32 QAR per day	Covers daily travel between the employee's hotel and office.
Total residual	Doha, Qatar	617.5 QAR per day	Total residual rate: intended to cover the total cost of meals in a period of 24 hours plus the cost of daily travel between the employee’s hotel and office; the 24 hour rate is the sum of the room rate and this total residual rate.

Source URL:
https://www.gov.uk/guidance/expenses-rates-for-employees-travelling-outside-the-uk
This source provides official travel rate information from gov.uk.