I can't see it happening. There really aren't any realistic alternatives on the near horizon.
An interesting discussion (on R4 again - sorry folks), a couple of weeks back when the BLINDINGLY obvious was pointed out. The gas network was installed to comfortably cope with any demand, which obviously includes winter heating, no matter the weather. The electricity grid was installed with a moderately constant demand in mind, the biggest challenge being the demand for boiling of kettles at half-time of various sporting events.
If you want to replace gas by electricity, the whole of the grid will have to additionally take all of the energy currently provided via pipes. Add into that replacing all of the energy currently provided by filling stations. Even if it were possible to fit every home with heat pumps, there would still be a large increase in domestic electricity demand.
Sounds like most of Britain underneath a cobweb of pylons and overhead lines.
I did also hear a comment from a "representative" of the electricity generation industry stating that things were in process. But then again, generation and distribution are two VERY different things entirely.