I think you'll find most airports with their own ANSP willl be reluctant to take you on unless there is something in it for them ie unless you commit to being employed by them for a certain number of years after you gain your certificates of competence; I've heard of too many cases recently where someone has gone to a 'small' airfield and once they have got the MER for a rating, they get a job at somewhere larger, hence the reluctance.
Training to 'solo' standard is likely to take at least 12 months for ADI then maybe another 6 months (probably longer) for APS.
Once you have completed the rating courses, I reckon (others may disagree) you would be best off trying for a contract with someone like HIAL.
Also bear in mind that ATC Training for an approved course in the UK isn't cheap; do you have enough money to pay for the courses?