On an IFR departure with cloudbase between 50 and 100ft, vis 150 -200 metres and the nearest single engine diversion almost an hour away (all legal for North Sea Cat A ops).
The problem...
Just after TDP, but before going into cloud, with the runway ahead of you still visible, you have an engine fire warning, would you continue the take-off, or put it back on the ground?
Not trying to make an argument about what´s right or wrong here, but there is a couple of things one should be aware of during a low visibility TO:
1. Determining the runway available after TDP is really difficult under these circumstances. Be prepared for an overrun.
2. "Ballooning" the AC, while trying to decelerate, might leave you in a situation where you end up IMC with 10-20 deg. nose up. This time with no fly away capability.