Article 43U.K.Procedure to be followed by the institution concerned in the investigation of a claim
1.The investigating institution shall enter on the form provided for in Article 42 (1) of the implementing Regulation the periods of insurance or residence completed under the legislation which it administers and it shall forward a copy of that form to the institution administering insurance in respect of invalidity, old-age or death (pensions) of any Member State with which the employed or self-employed person has been insured enclosing, where appropriate, any employment certificates produced by the claimant.
2.Where only one other institution is involved, that institution shall complete the said form by indicating:
(a)the periods of insurance or residence completed under the legislation which it administers;
(b)the amount of benefit which the claimant could claim in respect of those periods of insurance or residence only;
(c)the theoretical amount and the actual amount of benefits calculated in accordance with the provisions of Article 46 (2) of the Regulation.
The form, thus completed, shall be returned to the investigating institution.
If a right to benefits is acquired taking into account only the periods of insurance or residence completed under the legislation administered by the institution of the second Member State, and ifthe amount of benefit corresponding to those periods can be determined without delay, whereas the calculation procedure referred to in subparagraph (c) requires an appreciably longer period of time, the form shall be returned to the investigating institution with the information referred to in subparagraphs (a) and (b); the information referred to in subparagraph (c) shall be forwarded to the investigating institution as soon as possible.
3.If two or more other institutions are involved, each one of those institutions shall complete the said form by indicating the periods of insurance or residence completed under the legislation which it administers, and shall return it to the investigating institution.
If a right to benefits is acquired taking into account only the periods of insurance or residence completed under the legislation administered by one or more of those institutions, and if the amount of benefit corresponding to those periods can be determined without delay, the investigating institution shall be simultaneously notified of that amount and of the periods of insurance or residence; if the determination of the said amount involves some delay, the investigating institution shall be notified of that amount as soon as it has been determined.
On receipt of all the forms giving information concerning periods of insurance or residence and, where appropriate, the amount or amounts due under the legislation of one or more of the Member States concerned, the investigating institution shall forward a copy of the forms thus completed to each of the institutions concerned which shall specify thereon the theoretical amount and the actual amount of the benefits, calculated in accordance with the provisions of Article 46 (2) of the Regulation, and shall return the form to the investigating institution.
4.As soon as the investigating institution, upon receipt of the information referred to in paragraphs 2 or 3, establishes the fact that the provisions of Article 40 (2) or 48 (2) or (3) of the Regulation should be applied, it shall inform the other institutions concerned accordingly.
5.In the case provided for in Article 37 (d) of the implementing Regulation, the institutions of the Member States to whose legislation the claimant has been subject but to which he has applied for postponement of the award of the benefits shall enter on the form provided for in Article 42 (1) of the implementing Regulation only the periods of insurance or residence completed by the claimant under the legislation which they administer.