About 5 years at the moment. Maybe less if BA agree to waive engagement freezes.
I suppose if you're 'stuck' on the 'Bus you may as well be 'stuck' in the LHS.
There is always a reason when Commands go so junior. You will be stuck on SH for a very long time and at the bottom of the seniority list! Picking up every poorly constructed blind line going! Consider the fact that a lot of the Captains from Gatwick on the initial run of Airbii there went back to the RHS of LH!
Says something doesn't it!