Welcome Smokinpumpkins :)
Your weight "history" sounds very similar to mine. I put on 3 stone last year after I stopped work (got made reudnany and am now working from home) - hopefully we can reach target together. I am finding as I apporach 50 that it is more and more of an effort to lose weight. Recently, I have found that strict calorie counting (using FoodFoucs) is helping.
On portion control, I remember reading somewhere that using smaller plates helps trick the brain into thinking you have had more food ('cos the plate looks fuller). The toher thing I read was that we eat less off a blue plate (ingrained fear of blue food - tends to be poisonous!). However, I haven't gone as far as going out and buying a blue dinner service! 
I've realised that I didn't update my weight followwing last week, so I will do so now:
Disenchanted3:start wt: 13 st 7,target wt 10st 5lbs,current wt 12st 4lbs - wt loss 1stone 3 lbs.
Blondeshavemorefun;Start wt 13st 5 lb,target wt 11st,Current Wt 11 st 10 lb - Wt loss 23 lbs
Bebejones: Start Wt 15st 1lb, Target Wt 10st 7lbs, Current Wt 10st 6lb, Wt loss 4st 9lbs
Murtette: Start Wt 13st 6, Target Wt 10 st 6, Current Wt 12st 3 lbs, Wt loss 17 lb
RatherBeOnThePiste: start wt 14st 2 current weight 11.8 target wt 11st wt loss 2 stone 8lb
Trimmer:Start wt 12st 12.5; current weight 12st target wt 10stone 10lb; wt loss 14.5lb
Jodie - Start wt 11st7 Target wt 10st,current weight 10st 10.5lbs Wt loss 10.5lbs
Poohbearsmom: Start Wt: 15st 4lb, Target Wt: 10st, Wt Loss 1st 9lb
Laughalot: start wt 13st 4lbs; Traget wt 10st 5lbs ; Wt loss 16lbs
Prettybird: start wt 13st 5 lbs; Target wt 9st 13 lbs; current wt 13st 0 lbs; wt lost 5 lbs;
Liz Abbott: Start wt 15st: Target weight 11st
Huffythethreadslayer: start wt 14st 9lbs: Target wt, 13st
Hecate - start weight 36 stone . current weight 22st 9.5 lb weight lost: 4.5 lbs.
DespicableMe - start weight 14st10lbs. Target 11st6lbs; wt loss 2st10lbs
Shivermetimbers - start weight 27st3lb. current weight 22st5lb. wt lost 4lb
Smokinpumpkins - start weight 13st 9. Current weight 12st 3.
Am hoping that it tomorrow's weigh-in, I will formally break the 13stone barrier (again: I achieved it just before I went on holiday back in July
- it's taken me this long to get back there :()