https://www.slab.org.uk/faqs/time-and-line-schedule-1a/
In the majority of cases the only time and line work items are available are for:
However, where a solicitor carries out any of the following work:
you can also charge for that work on the basis of detailed fees prescribed under schedule 1A, Part 1.
To select these work items you must use those that are displayed as being 'Procedural appeal or confiscation hearing/order'.
Where you have made an application for exceptional research and this has been approved you may also charge for that research on the basis of the relevant fees prescribed under schedule 1A, Part 1.
You should use the work items available for a 'Procedural appeal' in such cases but it would help to make clear the charges are for exceptional research.