1.The compensation payable to witnesses and experts in respect of travel and subsistence expenses provided for in Article 62(2) shall be calculated as follows:U.K.
Travel expenses:
For the outward and return journey between the domicile or seat and the place where oral proceedings are held or where evidence is taken:
the cost of the first-class rail transport including usual transport supplements shall be paid where the total distance by the shortest rail route does not exceed 800 km;
the cost of the tourist-class air transport shall be paid where the total distance by the shortest rail route exceeds 800 km or the shortest route requires a sea-crossing.
Subsistence expenses shall be paid equal to the daily subsistence allowance of officials as laid down in Article 13 of Annex VII to the Staff Regulations of Officials of the European Communities.
When a witness or expert is summoned to proceedings at the Office he shall receive with the summons a travel order containing details of those amounts payable under points 1.1 and 1.2, together with a request form covering an advance on expenses. Before an advance can be paid to a witness or expert his entitlement must be certified by the member of the staff of the Office who ordered the evidence to be taken or, in the case of appeal proceedings, the chairman of the responsible Board of Appeal. The request form must therefore be returned to the Office for certification.