UK National Insurance Number

\b[AEKLHTY][ABEHKLMPRSTWXYZ]\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first character is any of AEKLHTY, second character is any of ABEHKLMPRSTWXYZ, followed by a 6-digit number, and the last character is any of [A-D].

1

\bB[ABEHKLMT]\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first character is B, second character is any of ABEHKLMT, followed by a 6-digit number, and the last character is any of [A-D].

1

\bC[ABEHKLR]\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first character is C, second character is any of ABEHKLR, followed by a 6-digit number, and the last character is any of [A-D].

1

\bGY\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first two characters are "GY", followed by a 6-digit number, and an alphabet [A-D].

1

\bJ[ABCEGHJKLMNPRSTWXYZ]\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first character is J, second character is any of ABCEGHJKLMNPRSTWXYZ, followed by a 6-digit number, and the last character is any of [A-D].

1

\bM[AWX]\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first character is M, second character is any of AWX, followed by a 6-digit number, and the last character is any of [A-D].

1

\bN[ABEHLMPRSWXYZ]\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first character is N, second character is any of ABEHLMPRSWXYZ, followed by a 6-digit number, and the last character is any of [A-D].

1

\bO[ABEHKLMPRSX]\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first character is O, second character is any of ABEHKLMPRSX, followed by a 6-digit number, and the last character is any of [A-D].

1

\bP[ABCEGHJLMNPRSTWXY]\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first character is P, second character is any of ABCEGHJLMNPRSTWXY, followed by a 6-digit number, and the last character is any of [A-D].

1

\bR[ABEHKMPRSTWXYZ]\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first character is R, second character is any of ABEHKMPRSTWXYZ, followed by a 6-digit number, and the last character is any of [A-D].

1

\bS[ABCGHJKLMNPRSTWXYZ]\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first character is S, second character is any of ABCGHJKLMNPRSTWXYZ, followed by a 6-digit number and the last character is any of [A-D].

1

\bW[ABEKLMP]\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first character is W, second character is any of ABEKLMP, followed by a 6-digit number and the last character is any of [A-D].

1

\bZ[ABEHKLMPRSTWXY]\d{6}[A-D]\b

Matches the pattern AANNNNNNA, where the first character is Z, second character is any of ABEHKLMPRSTWXY, followed by a 6-digit number and the last character is any of [A-D].

1