Don't forget to buy food and drinks in advance if you need them: train stations do not always have shops, while onboard cafés are not always available and often very expensive.
If you don't feel like spending many hours in a train, you can consider travelling by plane. Especially if you have the possibility to book in advance, flying to Glasgow can be definitely cheap.
What are the departure and arrival stations in Islington and Glasgow?
Trains leave Islington from Liverpool J Lennon Airport[ LJL ] and arrive at Glasgow Central[ GLC ].
How long will it take you from Islington to Glasgow by train and when do the trains leave?
With the fastest connections you will be in Glasgow in 3 hours and 54 minutes, but on average it takes 4 hours and 4 minutes. The first train headed to Glasgow is at 06:10, while the last one leaves Islington at 14:10.