Bowing flooring - recommendation sought for who can assist

[Peckhamnearbe]

hi

Can anyone help/advise of company with suitable credentials to take a look: the living room has oak effect flooring which was put down about 5 years ago. It is now bowing quite dramatically in one area. Perhaps dampness and inadequate waterproofing beneath? Anyone had this problem and can suggest a good company that they used who could take a look and quote? Lewisham/Southwark border. Thank you.