Ianpinder – Quite a few spots but all quite fickle and inconsistent. You can get lucky and have a cracking session in the right conditions but it's the exception rather than the rule.
Most N facing spots work after a big Northerly has been blowing down the North Sea. So more likely during Autumn / Winter. Look for a big low pressure off Scandinavia , and a day or so later we generally get waves. Surf forecasts for North Norfolk work OK for Kent or magicseaweed has a forecast for Joss Bay.
Joss Bay is probably the main spot – even has a surf school. It can get surprisingly packed when there is swell, and some pretty good local surfers. Sandbars in middle of bay and chalk reef at sides. Bit rippy in places so watch out.
Broadstairs (Viking Bay) off the harbour wall is a bit more mellow with longer rides – good on a longboard. Only really works at low tide in similar conditions.
Ramsgate Harbour Wall can work pretty well, but quite a lot of localism. I think there are also some semi secret spots around Margate.
Camber Sands works at high tide in a big South Westerly, but gets blown out very easily as its so exposed. A macking south westerly swell giving overhead waves further west will give you a couple of feet there. Quite a strong cross-shore rip so you can end up with a long walk back from where you started out from!
Brighton is the most consistent spot within about an hour's drive and has a big surf community. Main spot is Hot Pipes – near the outfall of Shoreham power station – not the most scenic of locations but can get pretty good on a SW wind swell and is sheltered from the wind. The Marina wall is also pretty good, but again very locally.
It's definitely not Hawaii, but some options locally, provided you've got the time to monitor the charts etc – worth an investment in a good winter wetsuit!
Mail me if you want more info. I'm just down the road from you. Don't get out much at the moment but hoping for some sessions over the Autumn if you fancy sharing petrol.