Had that problem for over 40 years, get ears syringed about twice a year.
Decades ago the hot oil for four days was the initial step. Things have moved on. That treatment is vaguely victorian
Drove me nuts living in a twilight world whilst ears were bunged with oil and cotton wool.
Not UK based, but I can assure you that much more efficient removal methods are available varying from instant relief doled out by a Canadian doctor in Negril Jamaica, utilising some kind of peroxide solution, to the current method employed by my Spanish GP, which consists of 5 mins of liquid in each earhole followed by a quick squirt with a warm syringe.
Cannot believe the lump of solid crud that emerges. Like some kind of aural enema
Makes my car sound like the exaust is screwed but makes my ipod sound like something top of the range from bose