re = /([A-Z]{1,2}[0-9]{1,2}[A-Z]{0,1}(\s[0-9][A-Z]{0,2})?)/
str = 'Pierre Negre
Balyasny European Asset Management
23 King Street, 4th Floor, LONDON, SW1Y 6QY
City: London, UK SW1Y 6QY W1S 2YZ
Town: 4th
02071490070 E14 W1S 4JU'
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html