How do you become Roman Catholic in the UK?

I was born and brought up in the Church of Scotland. However over the past few months I have become really interested in Catholicism and feel 'called' toward becoming Roman Catholic. What I would like to know is what steps I should take? Is it possible to attend Mass or do you have to already be... show more I was born and brought up in the Church of Scotland. However over the past few months I have become really interested in Catholicism and feel 'called' toward becoming Roman Catholic.

What I would like to know is what steps I should take? Is it possible to attend Mass or do you have to already be confirmed a Catholic?

Thanks for your help in advance.
Update: Thank you everyone for taking the time to reply, all your answers are very clear and offer good advice.
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