Most people will experience a significant fall in their income once they retire, so it's wise to give some thought to your retirement plans well in advance.The golden rule of retirement planning is to join the company pension plan and start saving early.
Planning for your retirement relies on you having a realistic expectation of how much money you'll need to live on and how much you're likely to receive from your pensions, savings and investments.
It helps if you can do a budget of your likely spend when you retire. Everyone needs to have enough money to cover the basics (clothes, food, heat, light, water etc) but you'll also need money for the extras like car tax, insurance & MOT, hobbies, birthdays, anniversaries, Christmas, holidays, meals out etc. The good news is that you won't have to pay any National Insurance contributions.
You then need to work out how much you'll get from your pension and other savings. Find out how much State Pension you're likely to receive and also ask your pension provider for a retirement forecast.
As you get older you might want to change your working pattern to part-time long before you actually stop working altogether. Or you might want to leave DMGT and get another job elsewhere. Or you might decide to take your pension, and continue working for the company. You'll need to take all possible scenarios into account when making your plans.