All commercial leases have rent reviews in, on the whole. Not all of them but there is a general principle that they will have especially for leases that are for more than a few years. Rent reviews may be three yearly, or five yearly.
Some Pub leases and retail leases have rental increases in accordance with the retail price index on an annual basis that needs to be considered.
There are also market rent reviews where clients need advice. It is not just a matter of agreeing a rent review, just because it has been presented to you by a landlord or their agents. There are provisions in the Lease that should be strictly complied with by all parties and advice can and should be given to tenants when considering rent reviews.