Data entry to Google sheet. Source: Media web site

1. Go to the page https://www.thelawyer.com/firms-a-z/. You will see 388 firms listed.

2. Click on the links and add the following info for each firm to a Google sheet

3. Firm name / Web address

4. Look at the web site and if a telephone number is shown for a London office, put the phone number into the sheet. If the web site does not show a telephone number do a Google search to find the telephone number. If you still can't find a telephone number leave the field blank and move on to the next firm.

5. Share the sheet once you have added the 388 firms
I estimate this is 5 hours work.