i work under a private firm,plz i want to know how i can present or write a letter of introduction to back up my application. Thank you.

plz house, i want to know the format of an introduction letter i will be needing for a u.k tourist visa application. thank you.

plz house i really need to know what documents i could tender for a first time tourist visa to the u.k.
i already have my C of O, bank statement,employment letter, hotel reservation,company i.d card,leave letter,marriage certificate, payslips.

plz i need to know wat other documents i require to submit.