Q1. I have a 5 hour layover tomorrow in Singapore. Single flight PNR issued by BA holidays. Will I be able to get my bags checked all the way through or will I have to clear immigration and customs in SIN?

Q2. I would like to see the new Jewel fountain in Singapore, I assume I have to go landslide for this, and that SIN immigration will let me as a UK national do this given an onward boarding pass to the uk?

Thanks in advance!