Birmingham, UK doesn't have just one postal code ! Each UK postal code only applies to a small number of properties - typically up to ten buildings ! You would need to provide much more information to get a more accurate answer.
Every postcode in Birmingham starts with the letter B
Depending on where the building is, every other value will be different.
For instance, Birmingham Town Hall has the postcode B1 2EA
Birmingham's Queen Elisabeth Hospital has the postcode B15 2TH
Birmingham Central Library has the postcode B3 3HQ
A UK postcode consists of 5-8 alphanumeric characters. Only the first, or first two letters actually correspond to their city/borough of origin. The rest of the characters identify areas, wards, subdivisions, even individual buildings.
A postcode in Birmingham will start with a B. B1 to B48 are various Birmingham districts. The remaining characters all depend on the exact location, ie, it's impossible to give a full postcode 'for Birmingham' without stating the exact location you want a postcode for.
Se27 5qr. N21 7hp. W1a 1aa.
Assuming you meant 'Birmingham' - there are literally hundreds of postal codes for the Birmingham area. Each code only applies to a small number of properties. You would need to be more specific.
UK postal codes beginning with WR are in and around Worcester. A UK postal code beginning with WR10 is in Pershore, Worcestershire.
In the UK, 0121 is the area code for Birmingham.
The UK does not have one postal code for the entire country.
UK Postal codes start differently depending on which area you are posting to.
It a code for your yahoo.
W1a 1aa
Yes, all addresses in the UK have a postal code.
No
The UK does not use zip codes it uses postal codes. Warwickshire has many different postal codes
All Glasgow postcodes begin G.
L37 2DX