Exhibit JAH3

Schematic Layout of required gas service pipe and internal gas riser system Installation at GrenfellTower following construction in 1974 together with gas meter installation, customers installationpipework and appliances.

6th FloorResidential

6th FloorResidential

4th FloorResidential

3rd FloorWalkway + I

2nd FloorWalkway

1st Floor(Mezzanine Floor)

Ground Floor

c*-7,Ri"" Lriti mConsumer Valve

V

CCM sumer Valve (7 \

EX1 I>rl-A X•

AMIMKEMEWOOK

IA 11t,7ALLA hr. ! vistattikl)cai tinweRv

Basement

H>1—

Service Cor Valve

my

Service Pipe continues to thethree other vertical gas riser

Gas Distribution Network

MET00018304_0001

NU

CerlanCe Ownership MdiEblili Customer's OwnershipOwner Ovmershin

--- trarvIre Pip.

tx1 Service Cook or

ValvePM

*ow /ranch Isolation

Valve

1><} Cormunne Valve

Meter Governor/

Reserlator

Ga. Met.-ID-

MeteHatton

Pier/work

N ,'1 Appliewe• leolotion 'MVO

A APPRO..

MET00018304_0002