So,
What you actually want is a 3 gang, two way switch and two 1 gang, two way switches.(one for the other side of the kitchen, one for the other end of the hall).
You need some T&E and some 3-core & E.
Switch 1 of 3-Gang:
T&E
Connect Common to 'live' feed (Brown) and L1 to porch light (Blue, sleeved Brown).
Switch 2 of 3-Gang and Kitchen 1-Gang/two way.
T&E
Connect L1 to 'live' feed (Brown) and L2 to 'switched live' (Blue, sleeved Brown)....to light.
AND.....
Using the 3-Core & E, connect each of the following on Switch 2 to the kitchen 1-Gang/two way:
L1 to L1
L2 to L2
Common to Common
Sleeve conductors brown.
Switch 3 of 3-Gang and Hall 1-Gang/two way:
Follow exact same procedure as 'Switch 2 of 3-Gang' above, only this time for the hall light.
Job done.
I would do it this way - you could also use 'conventional' two way switching method.(where the live feed comes in to one switch and exits via the other switch).
And if you want to be clever, don't drop your T&E, 'live' and 'sw/live' from the light to the switch, just run your 3-core via the light.