Once considered an extravagance, underfloor heating systems are becoming ever more popular and desirable, adding an element of luxury for prospective buyers. Radiators have always been a trustworthy and popular choice and have evolved to be a stylish feature as well as add heat to your bathroom.
For a more contemporary, minimalistic feel underfloor heating offers great benefits which leave you with the maximum space for sanitary-ware. Where space is concerned underfloor heating cannot be beaten however, adding in an underfloor heating system is more disruptive and time consuming than an easily wall-mounted radiator or heater. 
Radiators initially, do come out on top as the more cost-effective alternative to underfloor heating and are, undoubtedly, the most popular heating source across properties in the UK.
Underfloor heating ensures the minimalistic aesthetic is achieved where as a radiator or towel rail can add an element of luxury and become a stylish feature to your space as well as offering practicality.
Heated flooring is more expensive and in addition the flooring materials need to be compatible which can significantly increase or decrease the cost of your underfloor heating installation.
According to Homebuilding & Renovating expect to pay approximately £20 – £30 per m² for a quality underfloor heating system installed nonetheless, it can be up to 25% more efficient than radiators, reducing the overall heating cost.
Electric underfloor heating offers a cost-conscious alternative and boasts a longer life span. A slight disadvantage of an electric underfloor system is that it can take a longer time to heat up, but once heated provides cost-effective and significantly more evenly distributed heat in comparison to radiators.
To achieve the ultimate warmth and practicality, without the consideration of space or cost, fitting both underfloor heating and a heated rail ensures both style and heat are equally achieved.
https://www.bathstore.com/products/heating/buyers-guide/what-do-i-need-to-know-about-bathroom-heating-before-i-buy
https://www.forbes.com/sites/houzz/2014/12/09/14-ways-to-warm-up-your-bathroom-for-winter/#17ba1dec1c5f
https://www.kfh.co.uk/londonpropertymarket/property-inside-and-out/how-to-choose-the-right-bathroom-heating-for-your-home?v=2
https://www.homebuilding.co.uk/underfloor-heating-or-radiators-choosing-emitters/
https://www.ovoenergy.com/guides/energy-guides/pros--cons-of-underfloor-heating.html