drainage help

[kilmo]

hi im currently completing the plans for a change of use of my property down stairs from a pub to a dwelling, the one issue im stuck on is drainage, i have attached a sketch showing the existing drains in black and 2 posible routes in yellow and purple.

the length of the yellow / purple routes are 8-9m each
in the kitchen area there will be a dishwasher and sink
in the utility room washing machine and sink.


http://postimage.org/image/f8tqngf3v/

the floor is solid concrete.

any suggestions/input would be welcome.
my plans will have to pass building regs approval

[welsh brickie]

the existing manholes are no use whatsoever. Where the main drain is in yellow,and your drain connects to, you need to install a manhole about 1 metre inside your boundry.So that your drain has a clear straight run to the manhole,Not around the property,The Building inspector may also insist you have an internal screwdown air tight manhole.