I will resist the temptation to comment on the need, as you ask. DO NOT use any surgeon that is not listed and approved by BAAPS. That is the British Association of Aesthetic Plastic Surgeons. Make very sure that you will get adequate follow up. If you have the surgery in Belgium and something goes wrong the NHS can and probably will refuse to treat you. That could turn out to be very expensive. Ask him his failure rate. Any decent surgeon will know the figures and will NOT beoffended by being asked. If he is offended or fudges the numbers WALK. Make sure you fully understand all the implications. That is: they will need to be replaced every five or so years. Every foreign body in the body grows a capsule of fibrous tissue. Over time that will squeeze the implant into the smallest possible shape for it's volume. That is a sphere. That is why some girls look as if the have two balls glued to their chest. The capsules are contracting. So they need to be replaced. The time it takes will vary from person to person but is also influenced by the implant selected. The ones to go for are the roughest available. The rougher the surface, the longer it takes the capsule to organise it's self and start squeezing. (Because the fibres grow higgledy-piggledy against the rough surface.) You have to decide if you are going to have the implant under the gland or under the muscles. He will explain that. Be sure you understand the options. Entry can be through an incision round each nipple. You risk loss of nipple sensation. Through an incision under the breast. Through an incision in each armpit. Through an incision in your navel. He will tell you what to buy in the way of a sports bra to be worn after the operation. I do not advise going bra-less straight away.
I get my information from company training from when I worked for one of the leading manufacturers in Europe and traveled over the whole UK selling the nasty things.