UK Standard Post Size Weight up to & including 1st Class 2nd Class Letter 100g 64p 55p Large Letter 100g 96p 75p 250g £1.27 £1.20 500g £1.71 £1.54 750g £2.46 £2.09 Small Parcel 1kg £3.35 £2.85 2kg £5.50 £2.85 Medium Parcel 1kg £5.70 £4.95 2kg £8.95 £4.95 5kg £15.85 £13.75 10kg £21.90 £20/25 20kg £33.40 £28.55 Includes compensation up to £20 - Prices are exempt from VAT