I am not sure, I haven't seen the leases, but unless their is some sort of option to renew or option to purchase built into it I guess the new lease on certain strategic properties could have a bit of competitive bidding for it, Hell if I was the competition I might bid for the new lease just to increase my competitions rent
Ingham’s owns the majority of its operating plant and equipment, while its land and buildings are managed either through leasehold or freehold arrangements. Ingham’s operates 79 leasehold properties, the majority of which are secured with 20 year terms with options to extend (five further terms, with each term for 10 years).
Took less time to search lease in the prospectus than to write this post.