You are looking at the key when what you want is the value:

        foreach my $key (keys %$decodedJSON)
            {
            if (is_hashref($key))    {
            ...

[download]

Most likely you wanted:

        foreach my $key (keys %$decodedJSON)
            {
            my $val = $decodedJSON->{ $key };
            if (is_hashref($val))    {
            ...

[download]

In reply to Re: Parsing the data returned from the companies house API by Corion
in thread Parsing the data returned from the companies house API by irtuk

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