Yes you can try Spectrum Radio, they broadcast in Cantonese Everyday between 6-7pm. Their Chinese news is very popular at 6.30pm. Chart show is on Monday and they are probably the only radio in the UK to carry local Chinese Community news:

From their website http://www.558.net

电台简介

「伦敦国际广播电台ＡＭ５５８」每日廿四小时广播，製作多元文化节目，地区语言达廿三种；网络遍及英国南部，覆盖的地区人口超过八百多万。收听范围广泛：由伦敦远至根德郡、百福郡、雅适斯、剑桥、牛津、诺定咸、伯明翰、南威尔斯、修咸顿、塞鍚斯及布莱顿地区均有忠实的听众。

华人节目「城市好时光」自九０年启播以来，深受听众欢迎。每日下午六时至七时点播放，是英国唯一每日播放的华人节目，也是英国本地华人最具历史之电子传媒。内容不但多元化，而且最迎合英国华人口味。每日于六时半播放新闻报导及金融消息，听众一面工作，一面收听，既可享受丰富的娱乐，更能第一时间了解身边的大事，掌握时事脉搏。

本台更有流行歌曲、娱乐圈动态、影视快讯、华埠通讯、社区小报告及饮食业情报；节目经常推出游戏节目，送出丰富奖品，刺激好玩。「城市好时光」包罗万有，资讯娱乐并重，专业精神，服务社群，是英国华人心爱的节目。

Also try their new interactive service on http://sccn.558.net, kind of like a discussion forum and a blog. You can get your message read out kind of instantly when their show is on.

BBC also produce Chinese Radio programme, but is targeted for the Mainland Chinese, so very little local news.

http://news8.thdo.bbc.co.uk/chinese/trad/hi/uk/default.stm

If you are lucky enough to live in Manchester, there is also a Once a week Chinese service on the BBC GMR local service on Sunday between 7-9pm.

http://www.bbc.co.uk/manchester/chinatown/eh.shtml