Lovely to hear you're interested in bath Arima - basically, offers can come any time between now and the end of april, and when you submit your application will not impact whether you get an offer or not, as long as you submit by the equal consideration deadline. I completely empathise with how irritating and stressful it can be waiting on offers, but please do bear with us!
Anyone know when bath and Durham usually send offers?
Bath are pretty quick. Durham, however, is hellishly slow and does not always bother responding to applications and just lets them time out as rejections in May. You can see by previous year's applicant threads how slow Durham are.