It is now fairly common practise to suspend betting markets around the time of major BB events, such as nominations, evictions and tasks.
This is necessary for the bookies to avoid them facing situations like when Alison was nominated and for several minutes odds of up to 16-1 remained available for her eviction.
Even after hearing of Spencer's nomination, many bookies were offering of around 9-4 on him going. This enabled punters who had previously backed Alex at odds of 4-1 or more to cover their stakes and leave themselves in a win- win situation.
Expect much more miserly odds on evictions in coming weeks!
3 markets available at Ladbrokes currently and one at Surrey Sports