Hi I'm a uk citizen holding a british passport I'm...

In cases of visit and tourism, the visitor applies for an extension through the sponsor through whom the visa was issued. Visit visas of all kinds, whether for visit or tourism, are extended for 30 days and only twice, regardless of the basic period of the original visa. The fees for extending entry permits are 600 dirhams for each extension
The tourist or visitor visa is extended by requesting an extension before 30 days have passed since the expiry of his visa so that she can benefit from the extension decision, as she will not be able to obtain the extension if she exceeds this period, and she will be obligated to leave the country and return with a new visa.