Discovery 2 roof box

Hi all!

Can anybody recommend a roof box for my landrover discovery 2 please.

And do i need any special type of fixing?

We have a trailer but we also need a roof box due to 3 kids, 2 adults and a dog along with a mountain of camping gear!

Cheers all

I've got a mahoosive one for sale. 6'6" long, 2'3" wide 14" deep. It's German and really well made - cost me £150 and only been used twice.
It used to fit nicely on the top of me LWB Shogun and would be ideal for a Disco.
It's totally weatherproof and comes with 2 keys (strong locking system) and all the fittings.

Make me an offer.

Thanks!

However i have discovered a "high top" cover for my existing trailer which increases it's capacity 75% so i will go for that

(i also fear i would go under a low bridge or car park entrance with a hard top on the roof!)