Held, appeal dismissed. The equitable right at issue was a right to ask the court to exercise a discretionary power to protect the solicitor’s entitlement to fees as against his client. In order to come within the limits of that right, the services that the solicitor provided had to be recognisable as litigation services, which promoted access to justice. Accordingly, the services that would attract the protection of equity were services of the kind that a solicitor would perform in conducting litigation or contemplated litigation. The making of a claim under the Regulation being largely mechanical and formulaic, the services provided by the solicitors in processing the vast majority of the claims which did not require the issue of court proceedings could not be said either to be litigation services; or to be required in order to promote access to justice, unless and until the airline disputed a claim. Therefore, where the solicitors simply wrote a letter of claim or assisted a client to complete an online form, and the claim was paid in response to the letter or the form, the solicitors were not entitled to an interest in the compensation that equity would protect (paras 31–33, 53, 58–59, 75, 76, 77).