I have subtitles for a video in .srt format and I want to use this create 'burned-in' subtitles in Adobe Premiere Pro. Is this possible to do - and how?
What do you mean by burned in? Do you mean you wish to actually render the text on to the video or that you wish to encode it in a format that supports inclusion of a subtitle channel? For actually making them a permanent part of the video, I've always done it through titles rather than an srt. I unfortunately don't have any experience with the latter option of making them a subtitle channel in a compatible format, but it would likely depend greatly on the format chosen.
This is not possible with Premiere without plugins and I don't know of any that would do this. I recommend doing this outside of premiere like explained in this question: Render srt subtitles to video?
Premiere Pro lets you burn in permanent captions into your video. Burned-in captions are always visible regardless of whether closed captioning is enabled on your television or streaming device or not.
Premiere Pro supports burning in both closed captions and open captions while exporting your video.
When you import SRT files and XML files that have open caption data in them, Premiere Pro automatically converts these files to CEA-708 CC1 closed caption files. You can then edit these files and burn in the captions as subtitles while exporting using Premiere Pro or Adobe Media Encoder.
In the Export Settings dialog box, select the Export Format as Burn Captions Into Video.
Note: You cannot edit captions that are burned into the video.
Use aegisub to create an srt file (believe me it is easier this way). Then simply import the srt file into premiere. It will create a title sequence that will act as a layer that you can render onto the video. There are of course other ways of doing this such as what Ryan posted.
I personally do not like Premiere's handling of subtitles as there is no way to batch format all the subs!