Day 1 consists of a maths test (30 mins - 40 questions and designed not to be finished), an English interpretation test (similar to the BA one), a group exercise and a psychometric test.
maths test - revise long divison/multiplication, fractions, simple arithmetic
english test - the closest thing you can get to practise these are the GMAT style books (do a search for GMAT under books on amazon)
group ex - not very demanding, be yourself, say something relevant every couple of minutes