knocking and clunking noise when turn with full lock

Hi I've been getting a loud single clunking/knock that you can feel thru the pedals when i do a full lock turn at low speeds and also in slow stop n start traffic she makes a very quite repeated knocking sound as i pull of then again as i stop and I'm getting odd behaviour going round roundabouts like she twitches and loses grip and slides in dry from as low as 30mph.

Any ideas from people what could causing things?

Ill list whats been changed to help rule stuff out

lower arm links have been changed in last 3 months
lower hub ball joint changed 2 months ago
ktec dog bone mount fitted and power flex engine mounts 2 months ago
6 month old low miles covered top brand tyres loads of tread still
H&r springs in last 6 months.

went kwikfit purely for em to spot anything not to do any work I'm not crazy lol
kwikfit guess is both front shock top mounts and all wishbone bushes but they said they not for definite its that or just maybe one..so I'm reluctant to believe em.