ante post newbury advice

All relevant bets will be void where an event is: abandoned and not rescheduled; or postponed and rescheduled to another venue; or postponed and rescheduled to another day at the same venue with entries for the race being reopened or reverting back to a previous entry or declaration stage provided any additional horses are entered or re-entered and such entries or declarations are considered, in Betfair’s absolute discretion, material to the betting on the race. For the avoidance of doubt, where a race is postponed and rescheduled to another day at the same venue, relevant bets will stand where entries/declarations at the time of postponement remain unaltered or include any non-material addition(s) prior to the rescheduled race.

So do I assume that Betfair are hanging on to bets thinking that the same race could be re-scheduled later?

Seems like a fair assumption until there's an official announcement of what is to happen to those races.

Newbury were hoping to race this Sunday, as a yard in Lambourn had planned to gallop 12 horses Sunday morning but have been told by the racecourse, they can no longer gallop, as they are hoping to stage racing.