Without a consultation with a AME the OP cannot know their options. Depending on the medical health, and possibly the history, a self declaration may not be possible. The same for any of the options. It is worth saying that most AMEs will happily discuss this with the OP in general terms on the telephone before undertaking an expensive medical.
As said the licensing procedure itself is straightforward. No one could expect after 10-15 years of inactivity not to undertake revision training. Finding an examiner will not be a problem in the UK. due to the way the CAA has appointed examiners over recent years: there could be more examiners appointed than there are pilots these days.