Leasehold Reform Housing and Urban Development
Act 1993 (as amended)

STATES that there are two main qualifying requirements for a statutory extension of 90 years:

1. 1. Ownership of the flat for over two years.
2. 2. The lease was originally over 21 years in length.

As long as you meet the above two conditions you are likely to qualify to purchase a new lease with an extra 90 years at no ground rent in return for a Premium.