British Dress Code
Traditional dark grey and dark blue suits are less in evidence then in the past - except for sectors such as the law and banking and finance. if suits are worn, white, blue or pink shirts and reasonably sober ties are typical. In the more senior circles in the 'City', men will often wear cufflinks.
Women in management positions often mirror male attire in so far as dark suits and blouses are worn - with little in the way of more flamboyant accessories being seen.
There has, however, been a recent move away from this sober, formal appearance and many organisations have introduced a 'dress down' policy which allows employees to wear 'smart casual', as long as there are no clients to be met on that day. 'Smart casual' is difficult to describe but still tends to be on the conservative side.
The climate in the UK can be very rainy, so it is always a good idea to carry a raincoat and/or an umbrella when visiting.