Yes, LPU does offer offers lateral entry admission to the diploma holders. To join as a lateral entry student you need to write the LPUNEST exam. You can get a seat in LPU if you qualify for the exam. Here is an example of a B Tech CSE admission case. The eligibility is Pass with 60% aggregate marks in the Diploma 3 years after 10th Or 2 years after 10+2 or B.Sc or BCA or equivalent, subject to qualifying LPUNEST. So, all you need to do is merit in LPUNEST!