Regardless of Hares and Goose Necks there is no room to park diverted aircraft, no busses to move diverted pax to the terminal, no handlers to offload their bags and no belts to collect them from.
BRS has the least spare capacity of most regional non-BAA airports and as such should be well down the list of alternate operations.
CWL meanwhile coped very well when *most* airlines decamped there from BRS during the alleged slippery runway 'episode'.
It is to airport like CWL with tarmac to spare that alt ops will be directed in my opinion. I also don't think the strike will happen. Its not a finely balanced cost/saving calculation as keeping a FSP scheme for 2,000 new joiners would cost maybe £12 million over a decade. A repeated 2 day stoppage of BAA ops would cost them more than that in the first hour..
WWW