Integrated vented dryer - raise external vent height

[Westyrugby19]

Have an integrated dryer vented straight out of the external wall. However, we are prone to the odd bit of flooding outside which generally is harmless except the height is reaching the outlet vent of the tumble dryer and gaining access in tot he dryer/kitchen.
I don't have any room at the back of the dryer to re-route the hose so was hoping someone may have seen something I can put on the outside of the wall or even in the cavity between the brickwork to raise the vent height - something like a periscope box or something. I have to do the brickwork anyway to move an airbrick up as it is at the same height as the vent. Everything I have seen is either not available or on USA websites.

Thanks

 

[jj4091]

Flat ducting & silicon sealer either inside or out? https://www.tlc-direct.co.uk/Main_Index/Ventilation_Index/index.html