| Title | Test
                    Find
                    
                    Companies House Registration | 
            
                | Expression | (0[0-9]{7}|(AC|BR|FC|GE|GN|GS|IC|IP|LP|NA|NF|NI|NL|NO|NP|NR|NZ|OC|RC|SA|SC|SF|SI|SL|SO|SP|SR|SZ|ZC|R)[0-9]{6}) | 
            
                | Description | Unique reference for each company registered with Companies House in the UK | 
            
                | Matches | 1234567BR123456    |     7654321LP654321 | 
            
                | Non-Matches | 1234567BB123456     |     765432LP6543211 | 
            
                | Author | Rating:  PJWhitfield | 
            
                | Source |  | 
            
              | Your Rating |  |