1) Under section 19 of the Hindu Marriage Act 1955 states that every petition for divorce can be filed before a District Court within the local limits of whose original civil jurisdiction the marriage took place, respondent at the time of presenting the petition resides, or the parties last resided together or where petitioner is residing while presenting the petition
2) since your marriage has been solemnised in kerala you can file for divorce within court jurisdiction where marriage was solemnised or where you resided with your wife or where wife is currently residing
3) you can send email to her that it has been 2 months since she left her matrimonial home and to request her to return to her matrimonial home .request her to mention date when she desires to return so that you can send her air tickets to UK
4)mention that if she does not want to return you would be willing for divorce by mutual consent
5) if no reply is received send her legal notice and then file divorce petition