The severe restriction on investment in oil has been in place, unofficially, for at least two years.

If such an appeal had to meet the second appeals test there would be a very severe restriction on appellate review of what was, in effect, an original decision.

Depending on the nature of the battle being fought, either of both of these drawbacks could prove a severe restriction.

In fact, lattice compatibility imposes such a severe restriction that, up to isomorphism, we have only 7 distinct frieze groups and 17 distinct wallpaper groups.

It wants to persuade the government to make this a legally binding commitment and so avoids recommending severe restrictions on high-carbon activities, such as flying.