how to get only postcode in my query

i have following query i want only highlighted post code how to get this please help me i want result like this Via1: PostCode, Via2 :PostCode ,Via3: PostCode
CREATE TABLE booking
(
ID int IDENTITY(1,1) PRIMARY KEY,
address varchar(255)

)

insert into booking values('NORTHWICK AVENUE HARROW HA3 0AB')
insert into booking values('CHANCERY LANE LONDON WC2A 1AB')

CREATE TABLE Booking_ViaLocations
(
ID int IDENTITY(1,1) PRIMARY KEY,
BookingId  int,
ViaLocations varchar(255)

)

insert into Booking_ViaLocations values (1,'NORTHWICK AVENUE HARROW HA3 0AB')
insert into Booking_ViaLocations values (1,'CHANCERY LANE LONDON WC2A 1AB')
insert into Booking_ViaLocations values (1,'NEW OXFORD STREET LONDON WC1A 1BA')



 SELECT
      STUFF(  (
                SELECT  ' , Via '
                        + CAST(ROW_NUMBER() OVER
                               (ORDER BY  t1.BookingId asc) AS VARCHAR(4))+ ' : ' +
         right(t2.ViaLocValue,
         charindex(' ', reverse(t2.ViaLocValue),
         charindex(' ', reverse(t2.ViaLocValue)) + 1) - 1)
                FROM  Booking_ViaLocations t2
                WHERE t2.BookingId = t1.BookingId
                FOR XML PATH ('')
               )
              ,1,2,'') AS Names
  FROM   Booking_ViaLocations t1

  inner join Booking b on
 t1.BookingId = b.Id
GROUP BY t1.BookingId