Diamond Club Elite Levels - FlyerGuide Wiki

Silver:

Once you've earned 16,000 membership status miles your membership will be upgraded to silver.

As well as all the benefits of blue card membership, as a silver member you can also enjoy:

access to our exclusive diamond club and business lounges
access to other executive lounges overseas
extra 25% destinations miles bonus each month
Avis car hire upgrade voucher
use of the priority business check-in desk
telephone check-in (hand luggage only, on flights departing from the UK and ROI, excluding flights from London Heathrow Terminal 2)
priority ticket sales desk and check-in at London Heathrow Terminal 1
priority on standby
20kg additional baggage allowance
dedicated silver card enquiry line for bookings or enquiries
guaranteed business class booking 48 hours in advance on our operated flights, even if the flight is full (currently excludes longhaul flights and Leeds Bradford to Glasgow and Edinburgh and bmibaby flights)

Gold:

Once you've earned 38,000 membership status miles your membership will be upgraded to gold.

As well as all the benefits of silver diamond club membership, as a gold member you’ll also enjoy:

access to exclusive diamond club and business lounges, plus Star Alliance gold lounges, regardless of fare
four complimentary upgrade vouchers, for you to use when purchasing a bmi flight
extra hold luggage allowance
priority luggage delivery
handbaggage and telephone check-in
use of manned check-in desks regardless of fare
a dedicated gold card enquiry line for bookings, enquiries and requests
shorter advance notice on bmi free flight redemptions (three working days instead of the usual five)
upgrades on bmi award flights to the business cabin (or premium economy cabin on our longhaul services) for you and a companion*
a monthly destinations bonus of 35% on bmi flights - partner flights will continue to earn 25%
lifetime gold membership if you've earned gold diamond club status for 10 consecutive years
room upgrades at Grange Hotels
exclusive gifts to spend your miles on, plus special promotions on bmi fares throughout the year
gold members with over 55,000 membership status miles can buy a silver diamond club card for a friend or colleague
gold members with over 55,000 membership status miles will have any miles over this amount converted to destinations miles

You can automatically retain your gold membership when you collect 38,000 membership status miles during your 12 month membership period.