Wierd names

After half term I will be teaching a kid with the first name Allabamba. I kid you not. At the moment there is a tele advert with the theme tune Sweet Home Alabama which is now stuck in my head and I know I will struggle to teach her without laughing internally if not outloud. It reminds my of a story that might be apocryphal of a kid that thought her name was said Seaobham (Siobham) as her parents say it written down and liked it rather than Shevaughn as well as mums usual response "Would you like that spelt the traditional way" to some usual spellings. I believe there are restrictions on what you can name you child in the UK but I am not sure.