Minors Contracts Act 1988

Where a person, other than a minor, guarantees the performance by a minor of his obligations under any contract, the guarantee is enforceable against the guarantor to the same extent as if the minor had not been a minor at the relevant date.

This section does not operate to render a guarantee enforceable if it would, apart from this section, be unenforceable otherwise than by reasons of the minority of the person whose obligations are guaranteed.