Stranraer is closed now but stena p&o and seatruck operate out of cairnryan now which is only ten mins up the road from Stranraer and would be most likely the cheapest place to cross I think it’s about 1 and half hour crossing
birkenhead is 1 day and 1 night sailing,ridiculous price and its the nearest equivelant of prison with the option of drowning…8 hours of boredom…just drive to cairnryan 5 mins past stranraer.theres only 1 road so dead easy…p&o will always be cheaper than stena,dont book,just turn up and go,the 2 terminals are 2 mins apart,so if you just miss the p&o,then 2 mins to stena. theres about 7 sailings a day with p&o and same with stena.if you go birkenhead itl land 6-30 a.m and 6.30 pm…leaves at 10.30 each way. £50 a cabin,that you wont get a kip in as the tannoy ■■■■■ will start yakking about 5 a.m…always easier with cairn/belfast/larne. 2 hours crossing.