BA's distance-based award chart would price a nonstop LHR-HNL at 50,000 base Avios each way, the same as they currently do for Qantas' SYD-DXB flights, which are of similar length.
This is a bit of an anomaly in the award chart, and wouldn't really make sense given you can do LHR-LAX-HNL for only 37,500 base Avios each way.