You may need a visa in order to travel to the UK. It is important that you choose the correct visa route based on your main purpose for visiting. It isn't possible to study on a standard visitor visa so you should obtain either a student visa (previously Tier 4) or a short-term study visa.
The standard visitor visa is the appropriate visa if you need to come to the UK to attend an interview for a place on your course at London Met but it would not allow you to remain in the UK to start your studies.
Types of study visas
Tier 4 (General) student visa
For courses lasting longer than six months
If you're a national of a country outside the EEA and Switzerland and you want to study on a course lasting longer than six months you will need to apply for a Tier 4 student visa.
Short-term study visa
For courses lasting no more than six months
If you're a non-EEA national coming to the UK to study a full-time or part-time course lasting no more than six months you will need to apply for a short-term study visa.