In the Gas Fitting FAQ below you will still that the use of a flexible
hose is deprecated (and almost impossible to install in a compliant manner
for the supply of an inset hob).
As of 20th November the loop hole which permitted the use of flexibles is
closed with a revision to BS 6172.
Also required is minimum 300mm of worktop on each side.
Forbidden is fitting 700mm (5 burner) hobs under 600mm gaps in wall
cupboards.


Thanks for that the 300mm is new on me I must confess, being registered and
being employed to fit new hobs as replacements I find that 90% fail as to
clearances in some respect so unable to fit new hob. The instructions with
the new appliances are very good as a rule but diy persons never read them.

Peter