3x RCD single phase board?

[alanl]

Hello, does anyone know of an off the shelf 3 RCD consumer unit?

I've got a CU change coming up, with 16 circuits. Not a greater than normal load, just the circuits have been divided up when a rewire was done many years ago, and there is to be a further 3 or 4 new circuits in an extension.
I'm not happy having 8 circuits on each RCD, so would like to split them further.
The customer will not go to the greater expense of a full RCBO board.

I could go to a pair of standard CU's side by side, but would prefer to fit a single board, albeit it would be longer than typical.

Any ideas?
Thanks
Alan.

 

[meridian911]

Denmans do a high integrity one with 2 rcds (18 usable ways)in there basics range

Sorry about the crap photo hall not too much room where it was taken.