Access to Clubhouse when flying Economy

I think from what I have seen thus far that I know the answer to this one already, but just in case I am missing something I'll ask you wonderful Gurus just in case.
Myself and my girlfriend are flying LHR -> SYD later this year and are flying economy (Yes I am filled with dread at this thought but PE upgrade is a ridiculous sum!). So to make the whole experience a little more appealing I wondered if there was any route to get access to the Clubhouse at LHR for a little pre flight pampering?
TIA and great site btw!
Myself and my girlfriend are flying LHR -> SYD later this year and are flying economy (Yes I am filled with dread at this thought but PE upgrade is a ridiculous sum!). So to make the whole experience a little more appealing I wondered if there was any route to get access to the Clubhouse at LHR for a little pre flight pampering?
TIA and great site btw!
