My application has been rejected in 2018 to visit uk. I applyied again in 2019 to study at university and granted the visa and travelled to uk. In first week before applying for the BRP, i have been informed that i had to go back to my country due to some family issue and i did. Does my reject will remain or my visit to the uk and cancelling the study before issuance of BRP will ignore the reject from uk immigration system. My passport has a vignette sticker and the visa granted is D-TIER 4. Regards.
The 2018 UK visa rejection and the 2019 UK visa issuance will both remain on your record held by the UK visa authorities.
If you apply for a UK visa in the future, you must answer the questions in the application truthfully, and disclose these occurrences. UKVI will already have this information — it will be nothing new to them — but they want to know that you tell the truth. In a new application, you can explain why you left the UK early after your 2019 Tier 4 admission.
Your 2018 visa rejection did not prevent the issuance of a visa in 2019. In 2019, you obeyed the rules because there is no duty to use a visa, and no penalty for not using a visa or for departing before the visa's expiration date. Thus, these experiences should not adversely affect a future visa application.