"(1) This rule applies where - (a) a party applies to amend his statement of case in one of the ways mentioned in this rule; and (b) a period of limitation has expired ... (2) ... (3) ... (4) The court may allow an amendment to alter the capacity in which a party claims if the new capacity is one which that party had when the proceedings were started or has since acquired. (Rule 19.4 specifies the circumstances in which the court may allow a new party to be added or substituted after the end of a relevant limitation period)."
"You must provide the following information about yourself and the defendant according to the capacity in which you are suing and in which the defendant is being sued. When suing or being sued as:- an individual: All known forenames and surname, whether Mr, Mrs, Miss, Ms or other (eg Dr) and residential address (including postcode and telephone number) in England and Wales. Whether the defendant is a proprietor of a business a partner in a firm or an individual sued in the name of a club or other unincorporated association, the address for service should be the usual or last known place of residence or principal place of business of the company, firm or club or other unincorporated association. Where the individual is: under 18 write '(a child by Mr Joe Bloggs his litigation friend)' after the name. If the child is conducting proceedings on their own behalf write '(a child)' after the child's name. a patient within the meaning of theMental Health Act 1983 write ('by Mr Joe Bloggs his litigation friend)' after the patient's name. trading under another name you must add the words 'trading as' and the trading name eg 'Mr John Smith trading as Smith's Groceries'. suing or being sued in a representative capacity you must say what that capacity is eg 'Mr Joe Bloggs as the representative of Mrs Sharon Bloggs (deceased)'. suing or being sued in the name of a club or other unincorporated association add the words 'suing/sued on behalf of' followed by the name of the club or other unincorporated association. a firm enter the name of the firm followed by the words 'a firm' eg 'Bandbox - a firm' and an address for service which is either a partner's residential address or the principal or last known place of business. a corporation (other than a company) enter the full name of the corporation and the address which is either its principal office or any other place where the corporation carries on activities and which has a real connection with the claim. a company registered in England and Wales enter the name of the company and an address which is either the company's registered office or any place of business that has a real , or the most, connection with the claim eg the shop where the goods were bought. an overseas company (defined bys744 of the Companies Act 1985 ) enter the name of the company and either the address registered unders691 of the Act or the address of the place of business having a real, or the most, connection with the claim."
"The court may allow an amendment to alter the capacity in which a party claims if the new capacity is one which that party had when the proceedings were started or has since acquired."
"If the claimant is claiming in a representative capacity, the claim form must state what that capacity is."
"Nor are they suing in a different capacity. Although they now wish to claim by virtue of their right as equitable assignees of the benefits of the principal to the original contract, they still sue in their personal capacity as principals through the same agency on the contract albeit through an assignment of the benefit to them."