Work days : Monday through Friday
Bank Holidays : 1rst of January, Good friday, Easter Monday, Labor day (1rst monday of May), Spring Bank Holiday (last monday of May), Summer Bank Holiday (1rst monday of August in England, Wales and Northern Ireland and in Scotland it is the last monday of August), the 25th and 26th of December.
Time zone : GMT +0:00 – GMT +3:00
Capital : London 
Main Cities : London, Birmingham, Glasgow, Manchester, Edimbourg.
Country Code : ISO 3166-2:GB

VAT : 20%
Currency : Pound Sterling (GBP)
Main Languages : English
Primary carrier service postal : Royal Mail

Don't forget that for the calculation of your delivery delays, bank holidays are not considered work days.