Yes, carpet tiles can generally be reused in London offices if they are in good condition and have been properly maintained. In fact, one of the advantages of using carpet tiles over broadloom carpet is that they are modular, which means that they can be easily removed and replaced if they become worn or damaged, without having to replace the entire carpet.
When removing carpet tiles, it's important to do so carefully to avoid damaging the tiles or the sub-floor. You should also clean and sanitise the tiles before reusing them in another location, as this can help to prevent the spread of allergens and bacteria.
Keep in mind that the lifespan of carpet tiles can vary depending on factors such as the quality of the product, the level of foot traffic in the area, and the maintenance practices used. Generally, higher quality carpet tiles that are well-maintained can last for several years before they need to be replaced.